Answered question
I need help because i use it often
You can start with this FAQ: https://fizz.ca/en/faq/how-do-i-use-my-phone-to-access-the-internet
If problem presists, you may need to contact Fizz support.
You can send a message by facebook https://facebook.com/fizzca
Or you can use Fizz chat. Make sure that:
If the chat bubble does not appear, this means that the number of sessions waiting for our answers surpasses our processing capacity. If that happens, send us a private message via Facebook Messenger or Twitter.
Other answers
Disconnect (airplane mode) & reconnect (normal mode) to see if it helps