Website is a bit finiky at times...not yout fault. Wait for an hour and try again with a different brower or use incognito mode. Cleaar your cache files.
keep us posted how you make out.
@HArold7 If you can't log in, clear your cache on your browser and restart your computer and see if you can log in. Try another browser or computer if that doesn't work.. If not, and you aren't sure if you are using the right user name or password, do the "forgot my password".
If all else fails, you can contact a moderator about it, but know it takes aprox. 48-72 hours (2-3 days) to get a reply.
Can you locate the welcome email that you received after signing up for selfserve? It is possible that you used different email than for the community account.
What happens when you try to log in, any kind of error message?
What happiness when you try to open the selfserve account https://selfserve.publicmobile.ca/self-registration/
The website is not the best
I had the very same issue when I first singed up
I would recommend trying after an hour and I am optimistic it should work