22-10 Me:
The crowns I bought are not visible in the crown store of Elder Scrolls Online, usually they show up right after the purchase, what is causing the delay? And can it be solved?

23-10 STEAM-help:
I have taken a look and our records show the transaction was successful. It is possible that there is just a delay in the servers. However if the purchase is missing in-game, you will need to contact the game’s support department directly. They can verify the status of your purchase and add the missing content if there has been an error.
Be sure to include the Steam Transaction ID as proof of purchase:
Navigate to Steam Help and log in with your Steam account.
After you have logged in, click on Purchases.
Find the in-game purchase and click on it to view your receipt. The Transaction ID is included in the purchase details.
You can reach The Elder Scrolls Online support by using the information from the Official Support section found here.
If they are unable to correct the issue, please provide a copy of your communication with them in your next response.

23-10 Me:
I bought [x] Crowns via Steam, please find the transaction details and the reaction of Steam support below. The Crowns didn't came trough in the Crown store, Steam says the transaction on their side was succesfull. Can you resolve this please?
I Bought the Crowns to purchase [name of purchase]
[added transaction details]
[added response from STEAM-help on 31-10]
[added my ESO ID]
[added item name of the purchase]

25-10 ESO Support team:
We are very sorry that there has been a delay in receiving the crowns from your purchase or monthly ESO plus crowns allotment.
In order to receive your crowns we recommend the following troubleshooting steps:

• Log out and back into the game.
• Check your bank statement to make sure the payment has been made. Sometimes your bank or other financial institution can take longer to deliver the funds which can result in the delay you are seeing.

Please note: in some cases, crowns can take up to 24-48 hours to be delivered due to constraints from transaction processing by financial institutions
If the amount of crowns you are owed is not displayed or is still incorrect after 24 hours has passed, please feel free to reply to this email so our support team can look into it further.

27-10 Me:
I've checked my bank-account for the last time a few moments ago, the payment has been made and not cancelled nor returned to my bank-account.
Still the [x] Crowns have not arrived in game.
I did bought [name of purchase] by buying new crowns and it worked fine this time. But I'd still like to receive the [x] Crowns I bought.
Can you resolve it please?

29-10 ESO Support team:
If you purchased Crown Packs on Steam, but do not see them in game, you should ensure that you have linked your Steam and ESO accounts and that you have logged in using the Steam client.
If you are playing on the EU Server and recently linked your Steam Account, it is possible that it did not properly link. We recommend logging in briefly to the North American server, which should complete the link if it did not link properly previously.
If this is issue is still not resolved, please send us the Proof of Purchase so we may assist you further.
For what we need to do on our end, we really need a proof of purchase from Steam. I understand that they said to send the Transaction ID. However, we are unable to find anything. When we ask for proof of purchase, we require a receipt, invoice, or screenshot showing the product transaction.
Your proof of purchase must include all information listed below to ensure we can verify your purchases with other retailers.
Your proof of purchase must include the following:

• Product name
• Date of purchase
• Purchase amount

In the case of a digital purchase, the identity of the purchaser as detailed below
Proof of purchase from the Steam store must include your Steam ID or e-mail address. Details on how to find this information are below:

• Open your Steam Client
• Click your name in the upper right hand corner
• Select Account Details
• Under "Store and Purchase History" click the link to "View Purchase History"

Once we have the information we can get to the bottom of this.
If you have any questions or concerns please let us know.

30-10 Me:
I have logged into the NA server, out and in again, played again on the EU server, waited a day but the crowns still aren't visible.
I still require your assistance.
Underneath the item name and transaction name. The transaction ID was needed according to the Steam-helpdesk as proof
[added item name]
[added transaction ID]

01-11ESO Support team:
For what we need to do on our end, we really need a proof of purchase from Steam. I understand that they said to send the Transaction ID. However, we are unable to find anything. When we ask for proof of purchase, we require a receipt, invoice, or screenshot showing the product transaction.
Your proof of purchase must include all information listed below to ensure we can verify your purchases with other retailers.
Your proof of purchase must include the following:

• Product name
• Date of purchase
• Purchase amount

In the case of a digital purchase, the identity of the purchaser as detailed below
Proof of purchase from the Steam store must include your Steam ID or e-mail address. Details on how to find this information are below:

• Open your Steam Client
• Click your name in the upper right hand corner
• Select Account Details
• Under "Store and Purchase History" click the link to "View Purchase History"

Once we have the information we can get to the bottom of this.

2-11 Me:
Can't upload the screenshots (jpeg), got one of 55KB and one of 66KB, the website issues a pop-up with "warning, you have reached the limit of files that may be uploaded". What is the maximum size of the uploads, or does the total conversation of the ticket add to that limit? If sending via this ticket system doesn't work, is there another way to get the screenshots to ESO help?
I'll copy/paste the text I got from Steam in my email, [STEAM ID] is my steam ID, maybe it helps:
[added invoice details]

02-11 ESO Support team:
Thank you for attempting to send the proof of purchase, however, we are not able to accept the proof of purchase as a copy and paste file.
Please ensure that you are sending the proof of purchase as an attachment to your email reply. The file sizes that were specified should be small enough to be sent as an attachment to your next email reply.
If you are unable to send the proof of purchase, you may wish to try a different browser.

03-11 Me:
Attaching the files helped with another browser, thanks!
Please find them underneath.
[snippets of screenshots attached]

03-11 ESO Support team:
I sincerely apologize, we are unable to accept the Proof of Purchase provided since the images have been cropped. We cannot accept screenshots that have been edited or cropped in any way. Please retake the proof of screenshot when you have a moment.
If you ever have any other questions or concerns, do not hesitate to contact us again! We'll be happy to assist you.
Thank you for your continued interest and support!

03-11 Me:
Please see attached. I do hope, this is enough to resolve it.
[screenshots attached]

03-11 ESO Support team:
Good news! I have added [x] crowns to your account. You should see them on your next log in.

03-11 Me:
Woooohooooooo!