I have a Master Worldsmith account on your site. I have been having a problem where an ungodly number of pop-ups have been occurring whenever I try to make/edit content. The most prevalent is one telling me I am using unsupported characters or that I have lost connection as I type. I have not been using unsupported characters, unless, for some reason, basic letters are no longer supported, and I was clearly still connected to the internet. This message would stop if I started using my phone as a hotspot, but that method no longer works. I have also used the "attempt a fix" option on the pop-up; doing so broke my editor further and gave me a 403 POST error in the files area of the editor. I got the bug again as I was doing a brief edit to make the article visible for this report.   I have also, almost as frequently but usually only while working on character pages, been getting pop-ups that I am using unsupported features for my tier. For example, I was making a full-width footer on a previously existing character page, and I got a pop-up every few characters I typed. I managed to get the content added, but it took multiple tries to even get my changes to save. The message said that I was using a feature my tier does not have access to. I also frequently got this pop-up when adding features, like eye color or age, to a new character page.   Finally, I reached my limit today when, after fully clearing my browser cache and cookies multiple times, your site told me that looking at my account or world was "peeking at a private entry," and would not let me see anything, including my account, until I cleared the cache and cookies as well as logged out and back in multiple times.

I am not sure about how the "unsupported characters or no internet bug" happens. It seems to occur whenever I am editing or writing new pages for too long or have too many World Anvil pages open at one time. I think at least 5? Clicking "attempt a fix" before I cleared my cache and cookies further broke the editor, causing the 403 POST code to appear.
The unsupported tier messages popped up when I tried to type in a full-width footer I had added to a long existing character page. But it was also happening when I tried to add features (or type in the fields), like eye or hair color, to a brand-new character page.
As for the "peeking at a private entry" pop-up, I have no idea why this happened. I tried to solve the "unsupported characters and no internet" pop-up by clearing the cache and cookies on my browser, but after signing back in the "private entry" pop-up happened.