I've DMed both commenters above... I have trouble with Discord so its best to continue with DMs here
I changed the SRB2 thread title to reflect the beta release and it is now waiting for mod approval...that's why it is invisible. Another of my posts in that thread has been pending for a week and I have tried to reach out to the mods without success. Hopefully it goes back up, but it's hard to say when.
(Sonic Team Junior and the mods have been very cooperative and generous in DMs with me, moderation just seems slow overall).