Wifi connection help

So I purchased two of the Wyze camera (1080p) and wasn’t able to connect. I beleive this reason to be bc I was trying to connect to Xfinity wifi, which is 5g and unsecure. I read somewhere on here that in order to solve this issue, I need to purchase a 4g-5g travel router. Which I did. I purchased the TP-Link AC750 wireless portable travel router. Now I’m stuck. I’ve attempted to connect and I don’t know what I’m doing. Then I read that I may have to reboot/restart the travel router if I needed to start over, and I also have no idea how to do that either. ( Don’t know if this matters but I don’t have the modem at my location) Any help would be greatly appreciated. TIA

Is Xfinity your ISP?
And is the “Xfinity wifi” you refer to the modem / router?

If yes, then I find it difficult to believe it doesn’t support the 2.4 gHz band.

The easiest way to reboot is to unplug it, wait about 30 seconds, then plug back in. If you don’t have physical access, then log into the device and look for “restart device”.