I wrote to support and they said there is no way to review Crown Store history.
This is crazy! We pay for Crowns through real money and ESO Plus membership.
We should be permitted to see when Crowns are added, what they are spent on, and everything, just like a regular statement from a bank. It's also a security thing in that reviewing Crown Store purchases shows us whether someone else used our Crowns without our permission.
I can't believe this game has existed this long, using Crowns as a currency without having a way to track when they are added and how they were spent.