Hello! There is a problem, why are UPnP rules always created with In Interface as ether1?
There is pppoe-out in the settings for external, while the IP Address in the rules is set to the correct one!
RouterOS Version: 6.45.5 (mipsbe)
Board: hAP AC
“while the IP Address in the rules is set to the correct one” I am guessing you are forcing the IP instead of using interface.
Try using the interface without forcing IP.
Make sure the internal interface is set to your bridge not your actual etherX, if you are using a bridge.