Could not start session

[Ben8121]

CONCURRENCY_LIMIT

Only 1 concurrent sessions allowed per IP
WHEN I CLAIMED MY REWARD GOING TO THE NEXT ITS NOT ACCEPTING HOW DO I FIX

[xtupax]

Same here.
I closed the tab without making a claim and when I tried to go back I didn't find the claim part and decided to start over, now I've been stuck with this error for about 3 hours.

" [CONCURRENCY_LIMIT] Only 1 concurrent sessions allowed per IP"

I cleared the cache, restarted the computer and still have this error.