6 days ago Wyze did mention they have a beta fix that is supposed to solve this issue, but the next sentence states they are still working on the issue XB7 modem router “squared away”. That probably means they are either waiting for XFinity (or ARRIS / Technicolor - manufacturers of XB7/XB8) to push out a fix on their end?. They haven’t given any ETA so I think this may take a while.
Since you have the TP-Link router with you already, I suggest you to set XB7 in bridge mode and hook up your new TP-Link router. I have linked the XFinity instructions on how to access your XB7 modem router. I suggest you to look up on Youtube for step-by-step guide on how to set up bridge mode on XB7.