No internet with mikrotik wAp second in a chain...

Hello, everyone!
So, the issue is next:
I have RB750r2 as a test board and RBwAP2ed-be as a wi-fi AP.
The RB750r2 connetced to the Main router from Asus (cable from ISP connected into it) and has a defoult configuration (router mode).
All who connected to this board has an internet access (via LAN, there is no WLAN)

The RBwAP connected to the RB750r2 and also has a defoult configuration (WISP AP - router mode), with own DHCP (range 10.5.5.0/24)
any device which connected to this wAP get an IP but no internet connection.
Can’t understand what is wrong??

If i connect wAP to the Asus router - i get an internet, all works like it should.

I have spended days finding solution… no luck


[EDIT]
Seems issues was in DHCP Server conflict…