Tapo indoor camera setup with Wi-Fi 7 booster

I have recently had Telus home internet service installed and cannot get live feed on TP-Link Tapo 225 indoor camera over mobile network. It works fine while the phone is connected to the home wi-fi. Spent 2 hours with tech support on the phone trying various things without success. The issue started right after I switched home internet service providers. Could this be a double NAT issue?

thanks!