Answered question
I'm trying to subscribe, but when I put my credit card number, a message Show up saying I achieved the maximum number of credits card
That's a known bug. You need to contact Fizz.
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You can chat with Fizz by opening a help page ( try this one https://fizz.ca/en/faq/im-unable-log-my-fizz-account-what... ).
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Contactez Fizz via le clavardage en ouvrant une page d'aide : essayez ce lien https://fizz.ca/fr/faq/que-faire-si-je-narrive-pas-me-con....
Et vous verrez la bulle au coin droit au bas de la page