Kids devices not connecting to koalasafe


Hi Koalasafe worked for a few days, but now my kids devices are not “connecting”. I am using Eir Fibre in Ireland using the Huwawei F2000 router.

When the devices joins the koala network, it is getting an ip address on the apple devices, but the internet does not work. When I go into the koala app, the devices are setup but they show as disconnected. When the same devices use normal wifi SSID performance and content is fine.
Is their a compatibility issue between this modem type and Koalasafe.
All the devices are apple, 5, 6, 6A and touch.
Would appreciate any troublehooting tips