Wireguard - adding another peer they make handshake but cant ping

I followed this instruction ( https://help.mikrotik.com/docs/display/ROS/WireGuard ) to make wireguard tunnel between two routers and it worked.
Router A and Router B - can ping each other
Now i added Router C to communicate with Router A with the same instruction and i receive Rx/Tx from both and they are making handshake but i can’t ping each other.

Also, im confused how this even works without selfmade tunnel ip. i used just wan and lan ip for both routers

No idea what mess you have without the configs of both routers.
/export file=anynameyouwish ( minus router serial number, any public WANIP information, keys, etc. )

One has to ensure the correct allowed addresses in wirguard setting, matching with ip routes if required for remote subnets and finally on
the Server router, the proper firewall rules.

Thanks for response, i give you config in picture way. These screenshots are all from A router
https://imgur.com/a/OhlCSL0

4th pic (adress)
FROM B to A - 192.255.255.2/30 | 192.255.255.0
FROM C to A - 192.255.255.5/30 | 192.255.255.4