Trying to connect a device through a bridge to my network

Hello , i trying to create the following scenario. I have a set-top-box which does not have wireless connectivity, only wired, but the is no physical network infrastructure to that location. So i’m trying to use a mikrotik routerboard (RB951G-2HnD) to connect it through wireless. This is my diagram

Router------------->UniFi AP------------>Mikrotik----------->Set-top-box
This is (CAT5e) (Wireless) (CAT5e)
my DHCP
server

I have created a bridge with wlan1 and all the other ether interfaces. Then i added the bridge as a dhcp client and connected the wlan1 interface to the UniFi AP. This is my configuration.

/interface bridge
add mtu=1500 name=bridge1
/interface wireless
set [ find default-name=wlan1 ] band=2ghz-b/g/n country=greece disabled=no \
    frequency=2437 frequency-mode=regulatory-domain l2mtu=2290 mode=\
    station-pseudobridge ssid=on9
/interface wireless security-profiles
set [ find default=yes ] authentication-types=wpa2-psk eap-methods="" mode=\
    dynamic-keys wpa2-pre-shared-key=1234
/system logging action
set 2 remember=yes
/interface bridge port
add bridge=bridge1 interface=ether1
add bridge=bridge1 interface=ether2
add bridge=bridge1 interface=ether3
add bridge=bridge1 interface=ether4
add bridge=bridge1 interface=ether5
add bridge=bridge1 interface=wlan1
/ip dhcp-client
add default-route-distance=0 dhcp-options=hostname,clientid disab
    interface=bridge1
/ip dns
set allow-remote-requests=yes
/ip upnp
set allow-disable-external-interface=no
/snmp
set trap-community=public
/system leds
set 0 interface=wlan1

In wlan1 mode i selected station pseudobridge as this is the only one working right now.I haven’t been able to make it work with “station”, and my problem is that the bridge and the client doesn’t take an ip address from dhcp. Only when i put a static ip at the client do i get internet connection. Can anyone help me with the dhcp as it doesn’t seem to pass through the bridge or at the bridge interface. Thanks in advance.