Home printer and Ring door cam can't see or connect to new Hub4 router

Hey Folks, 

I have the new Hub 4 printer, however, my home printer and my ring door cam can't see the network when I am trying to connect them to the router. Any ideas? I've read elsewhere this might be a problem between 2.4 & 5hgz but the previous router had the same config and all devices connected no problems at all.

MTIA!

Djuro