Before hand I had signed up for all 4 "Wednesday Omnium" races. Warm-up and first two races went without any issues, but when I joined the 3rd race I got the error message of:
"Already connected.
Your account is already connected in another session.

Please log out on your other session, and then try again."

I was sent to the menu. And I tried multiple times to join, but got the same error message. And after the pen had closed I joined to "free ride" without any issue.

(I also later joined the 4th race without issue.) And this is the only computer that I have ever used for TP Virtual/Indie Velo, so I do not know what this other session is.

Video: https://www.youtube.com/live/OffIK40x05Y?si=lPpqbpKDDqr_GoTx&t=2222 (at about 37:20)

Attached is the only log file in the "LogFiles" folder, but I can see it is rather old, so I dubt it is of any use.