Yoto gen 3 suddenly not connecting to wifi

Hi all,

Our yoto gen 3 has suddenly disconnected itself from our wifi and will not reconnect. We have done a hard reset, restarted the router and done a full reset up on the player and it still will not connect. We get through to the wifi connection step in the set up then just get a big red cross on the screen.

Annoying as the kids have become quite used to the sleep radio to help them drift off. Also it is daylight savings change here tonight and the nightlight system would have been good to use tonight.

Anyone had similar issues or know of a solution?