Mullvad’s routers implement NAT port mapping protocol. That’s the technology that makes direct seeding possible. If you don’t understand how UPnP and NAT-PMP work together, then just say that. Keep having fun tho’
Prove it. Email them.
No. I’m not trying to prove anything. I’ve been using Mullvad with UPnP and direct seeding works. I don’t care about whether you believe me.
Futhermore, Mullvad blocks UPnP from working only on select ports – NOT every port. The same is true for NAT-PMP. Mullvad would probably go bankrupt if they blocked automatic port forwarding.
Show me you have open ports while using mullvad. You can use a port checker tool. I’m waiting.
If you don’t know or understand how automatic port forwarding works, then just say that.
You can’t show any open ports? Not even the one your bt client is using that you’re “seeding” with? What a shock. Good to know, thanks.
OMG. Go research how UPnP and NAT-PMP work. Then, we can continue.
Still can’t find an open port, eh? 
it’s alright, we know.
I’m going to post this in: https://www.reddit.com/r/confidentlyincorrect/
If you’re so dense that you’re incapable of understanding how UPnP works, then just say that.