I don't know.
I just noticed that you have renamed:
ether1=Wan (it would be smarter IMHO to call it Wan_port or - better - Wan_eth1)
ether8="Port 8"
Then "Port 8" disappears, as it is not part of the bridge, nor it has an entry in interface list member.
Cannot say how it was (reversed) when you had that VPN working, I have to note (and again no idea if connected with the issue at hand) that these two ports (and these two ports only) have a manually set MAC.
You also have a * (asterisk) in your configuration that shouldn't normally be there, see Point #21 here:
GP & CSA for Mikrotik devices
Logically the *F in /interface bridge port belonged to this Port 8, so somehow when you made the changes some references were lost, no idea if this can be related.