XR700 Random Wifi Disconnections

Ive had my XR700 for a couple of weeks and followed the setup wizards and updated to the latest firmware but i started getting random wifi problems where every wifi device would be disconnected at the same time. in the logs it would give something like this

[DumaOS] DHCP lease change., Monday, December 31, 2018 10:43:35
[DumaOS] DHCP new event., Monday, December 31, 2018 10:43:35
[DHCP IP: 192.168.1.127][Device Name: CHROMECAST] to MAC address f4:f5:d8:e0:20:1c, Monday, December 31, 2018 10:43:34
[DumaOS] DHCP lease change., Monday, December 31, 2018 10:43:34
[DumaOS] DHCP new event., Monday, December 31, 2018 10:43:34
[DHCP IP: 192.168.1.132][Device Name: ANDROID-CC8EAC97F224D9FD] to MAC address 68:c4:4d:0b:7c:97, Monday, December 31, 2018 10:4

I reset the router many times and then flashes the older .20 firmware and factory reset it. its still doing it and i cannot work out why. I cannot contact support directly so thought i would ask here before i get a refund on a faulty device.

Thanks

NickWilde