RB450 DHCP + AP = only one wireless client.

Hello. I have a problem configuring an external AP pluged into the network, where RB450 acts like DHCP server. Only one wireless client connects to the network, receiving address from DHCP (i can see it in DHCP lease table as well as in ARP table). Second client just remembers the wireless settings and stays disconnected.
I believe this is a problem with transmitting requests from AP to RB450 (maybe somehow related to MACs), but since i’m just the beginner, I would be very grateful if someone could help me.

what ap you used ?

waht is ap wireless confiuration?

Check is the mode on wireless interface set to “ap-bridge”