Unable to connect from Apple iPhone or iPad - Pc & iMac ok

I’m running HA on Virtualbox on Mac. I was recently forced to move to new SSID and IP Range. I managed to update the IP address of HA via GUI and reflashed devices to new Wifi.

I can now access via an PC or Mac by Safari, Edge or Chrome with no issues however I cant access from any iPhone or iPad ( tried several) on same local network either through browser or companion app (this times out with 1001 error) I can’t see the Host IP with FING on iphone but can see other sensors etc.

Edit: after a router reboot I was able to connect via app for a few minutes before it returned a 1001 time out error.

I’ve cleared web data from iPhone but am out of ideas.