Played the Beta of the game, had this problem, now having it with the released game. Seems like I paid £50 and 3-month sub for the most frustrating experience ever to grace my PC.
So, I go up to a quest NPC (or anything for that matter); the interact prompt appears. I click 'E', the prompt goes dark, and...nothing. No looting, no reading books, nothing. Also, if I try to fight anything, the 'action' keys stop working, leaving only WASD, ESC and F1 still functional. Just. Tried /reloadui and all the rest of the suggestions. No.
Then the 'Error' message appears, asking me to log back in after a few minutes. Glenumbra (where Mihayya resides) takes up to 5 mins to load, every time, and after it does load, I'm 2 mins into the game, trying to interact with Mihayya, when I get kicked. Every time.
I have: Updated Client and Launcher, repaired Launcher, uninstalled/reinstalled Client, tried a different keyboard - all to no avail. Game Consultant Report attached.
I understand the complexity of your product, but I hope you'll be able to suggest a simple solution to my problem. Thanks.