It happened during the transition from our old forum platform (Zetaboards) to our current platform (Xenforo) back in 2018. There was an error that occurred in converting some existing forum accounts from Zetaboards. It’s harmless for the most part besides this cosmetic join date blemish (which is not easily fixable). However, some users have reported issues with private messaging, account following, profile posting, etc. in the past. If any of these users experience any such issues, they are encouraged to contact a forum admin for assistance.