Thank you. When i changed mode on RB941 from B/G to B/G/N it connected to WiFi. Then i had problem because RB941 didn't want to get IP from DHCP. Then it got IP but i didn't get IP on my laptop that was connected to RB941 even i connected to ether port that was in the same bridge as WiFi.
As I already wrote, you CANNOT connect a RB941 to a new AP using station-pseudobridge. That means you CANNOT put the WiFi in the bridge.
Maybe the solution is to buy some news HAP's?
You would need to buy at least a hAP ax2.
Another solution is to re-configure your existing RB941 to router mode. Probably easiest to do that using quickset.
The WiFi has to be in station mode (not station-pseudobridge) and it must NOT be part of a bridge.
Put DHCP client on it. On the local bridge, put only the ethernet ports and a DHCP server, with IP range different from the range used on WiFi.
Then the RB941 will work as a NAT router and it will work fine.