Ubiquiti in bridge mode do not pass traffic from the switch, but pass dhcp data. Where to dig?

Question

Computer networks

Essence:
A link with 3 vlans comes to the switch. Each port has its own vlan, respectively uplink tagged, and on the switches, ports are set with the desired vlan number to untagged.
One of these ports is dedicated to the bridge on NanoStation+NanoBridge. And this bridge does not want to pass traffic through itself, but only passes dhcp data (ip to each poppy, gateway and dns).
Where to look?
long switch des 3200. ACL or any other rules are not set.

Answer 1

Look in the direction of tcp blocking, because dhcp works on the udp protocol.

Answer 2

vlan on ubiquiti created? if so, did they add these vlans to the bridge?