Activate replacement SIM card

You need to replace the sim from your account

This process will cancel your old SIM card. Log into your account to change your SIM card (My plans > Manage > Change SIM card).

https://fizz.ca/en/faq/lost-stolen-mobile

Try with this instructions, I tried now and I was able to have the chat bubble.
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- Go to this page https://fizz.ca/en/contact-us, if you are not connect login
- The business hours: every day from 8 a.m. to 9 p.m. (EST).
- Wait 5 seconds for the bubble icon to appear at the bottom right of the browser and click on the icon to chat with support. Try a different browser if you have issues getting the bubble to appear.
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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.