Devices on lan wont "see" eachother - Printing on Access point works but not on local network

Hi, I have a microtik hap ac2 and I did a basic configuration on Quick setup.From that router I have 2 access points (one for the guests) and a cable local network. I connected my printer to the wifi and I can print and access to that printer on that specific WiFi but I cannot print on my local network. Devices on local newtork also cannot ping each other (but they are on the same network?) and cannot ping devices on wifi. Can someone point me to the right direction? I tried to “attach” the eth interface and access point interface to a bridge. I can ping the gateway and the internet works.

Just to confirm you have an MT wifi router, connected via ethernet cable to two AP devices, one is an access point for guests and one is a an access point for ???

If they are all MT devices
Suggest you post their configs
/export hide-sensitive file=anynameyouwish