@faytheful On your desktop computer, does your store content still all show up in your launcher? Do you have much CC?
The reason I'm asking is because the first time I downloaded CC from TSR, less than a week later, when I opened my game on Friday the 13th, none of my store or custom content showed up in my game. But it was all in my launcher, and the worlds were all in the Installed Worlds folder. I had immediate issues with the CC I had downloaded, and had removed it from my game and returned to the save from before, but apparently, I had somehow gotten a virus that wiped the CC index file later, on Friday the 13th, so that nothing would show up in my game. I had to let the game generate a new folder (to eliminate any possible corruption), and reinstall everything. After it was all reinstalled, I only moved those files to it from the old folder that were dated before I had installed the CC.
I have an ad blocker, so I never saw any ads, much less clicked on any, so the virus must have come with the CC I downloaded. If you have any new CC, maybe you got a similar virus from it.