Stick Up Cameras Simply Just Not Working.

I bought 2 Stick Up Battery Cams the other day & they've not worked properly since installing.I am having **massive** issues in getting a live view from them. This works once for 2 minutes then not again for hours. Rebooting my wifi mesh system seems to allow me to connect to them very briefly, but if I exit and come back into the app - I cannot connect again.The network is fine. My internal firewall is disabled for the purposes of testing the cameras & this has made no difference whatsoever. The wifi signal across my home is perfectly fine, I'm getting RSSI 75 & 71 on each camera respectively - the cameras are located in positions close to the wifi mesh units I have placed around my home.I have reset the cameras multiple times & tried the app on Android, iOS and Windows - there is no difference whatever device is used.The cameras are also not recording motion properly when sensitivity is at its highest. I can literally go outside and jump/wave in front of the cameras & nothing happens.I will not be recommending Ring to anyone & will be giving it 1 week to reach a solution here before returning the units for a refund. Absolutely terrible devices. I've had £20 Chinese IP cameras perform more reliably than these things.I'd appreciate some sort of assistance regarding this & as I can see the stock answer is to check ports and protocols when I've seen this issue reported elsewhere on the forum, please read earlier in post where I have advised that the firewall is disabled currently.