Internet is not working, always get cut off,restarted many times, have to work from Home due to Covi

Did you already try to do a factory reset?

If you want to re-enable the Wi-Fi capability of your Fizz Wi-Fi modem, you'll need to reset it to its factory settings by holding down the reset button on the back of the device for ten (10) seconds.

Also try to

Disable Band Steering in Wireless -> Basic Settings -> 5G
Disable ATF in Wireless -> ATF -> 2.4G and 5G
Manually set the WiFi channels to the less crowded ones (see the answers in the other threads you made)

if this does not help try to contact the support

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.