@ahl_ 

LAN -> WIFI should work because ethernet ports are bridged to the router's wireless network.

It may be due to a networks settings of your devices - for example if you set static IP addresses on some of them.

Do an experiment - set all (wired/wireless) devices to receive their IP addresses by router's DHCP server.

If you need to have some devices with a particular IP address use the DHCP Address Reservation for them.

Then reboot all devices to renew their IP addresses and test if they can see each other.

Note that PC when is connected by ethernet cable should have Private Network profile (not Public) to communicate with other devices in the LAN:

https://www.alphr.com/how-to-change-a-wi-fi-network-from-public-to-private-in-windows-10/