Answered question
After a suspension cause by a late payment, how many time does it take to restore my account?
24 hours or shorter. Just be patient
Other answers
Usually it takes 24 hours and this is because payments are processed only once a day.
To be sure I suggest that you contact Fizz with chat by opening a help page https://fizz.ca/en/faq/im-unable-log-my-fizz-account-what....
Wait for 15 seconds and look at the bottom right of the page
It's 24 hours max if you do it within 7 days. To be safe, after you updated your payment method, go to https://fizz.ca/en/faq/resolving-issues, wait 10 seconds, click green bubble on bottom right, and start chat
I would contact fizz by the chat and let them know the situation. It's happenned to me and they resolve the problème the next day.