Hi @FrogPrince75
I've split your post from the rest as I feel you're facing more difficult issue that may not be related to the gallery update.
So, for troubleshooting purposes, this is easier.
First question: Do you want to change your Origin user name on here ? I can try get you detailed instructions for that, if you wanna do that.
Have your creations ever been in the gallery or did you always just see them under my library ? The my library is files locally on your computer and that has nothing to do with the online gallery. If you just save them there and you can no longer see them, that means they either got deleted from your hard drive or the game is now using a different folder.
To my knowledge, the gallery has always used the OriginID and never any Sims identities you might have on the forums (different from the exchange in Sims 3).
I've checked the SirSimALot and while I can still find the name, I also see no content. Is this your user name also or someone elses ?
Hopefully we can figure this out together. I can try post some pictures to make it clearer what I see if needed. I've seen that you were sent here from the officials by a moderator but I think, he misunderstood your issue just like I did in the beginning. The thread you posted in was to collect all new issues with the gallery in one space and then take troubleshooting from there if necessary as most issues posted in there so far were either mod related or intermediate issues.
Don't believe yours is that. Think is more something that just needs explaining or maybe looked into more closely if there's really stuff disappearing from the gallery.