Hey,
did you find a solution for this problem? I am facing the exact same problem at the moment. I cannot recieve any emails from Pavlovia (neither registration nor password recovery) and i cannot sign in either.
On another thread (Unable to receive Pavlovia password recovery emails - #4 by t_s) it seemed that this problem was solved, however, i still face the same problem.
Any help would be much appreciated.
Cheers