Creality Print v5+ on MacOS not detecting K1C

Software versions : 5.1.4, 5.1.2, 5.0.3
Macbook Pro M1

Can anyone help? I can’t seem to connect my K1C into Creality Print after a week holiday. So far this is what I have tried;

Printer shows offline, removed all Creality Print software and settings in Library, reinstalled, still offline, deleted printer, tried rescan, tried manually adding with no joy.

Reset K1C, printer connected to cloud and will print from cloud, but not from Creality Print.

Firewall off, no ping from mac.

Many thanks,
Neil.

OK so this morning its back like nothing happened, I think this is a router issue, but I’m not sure why.