What phone are you using?
You said mobile is on, I assume it is working and you can browse internet?
If settings are okay on your phone, you will need to contact Fizz support
Are you able to try with another phone?
Btw is the problem happening with multiple users?
Just want to confirm it's not an issue on the other users side.
You can check this Fizz FAQ link regarding text messages: https://fizz.ca/en/faq/i-cant-send-or-receive-text-messages
If the issue persists, you will need to contact Fizz support: https://fizz.ca/en/contact-us
Make sure that: