Technicolor routers have a known issue that prevents them from working with WiiM device. The solution below will ensure that they will work with WiiM.
Solution 1:
- Log into the router.
 - Navigate to Advanced Setup > DHCP Reservation.
 - Locate DHCP Reservation State.
 - Remove existing DHCP Reservations.
 - Set DHCP Reservation State to Disable.
 - Reboot all WiiM products.
 
Solution 2:
Turn off WiFi 6 support on your Technicolor router.
- Login to the router, then in the 2.4 GHz band -- change Mode from 802.11g/n/ax to 802.11g/n.
 - By removing the "ax" you make the router go from Wifi 6 to Wifi 5 support.