Home Assistant Community Add-on: Nginx Proxy Manager

Hi guys, newbie here.

I’m trying to use this add-on, but I’m stuck at the SSL configuration.

I can’t open the port 80 in my router, so I need to use the DNS Challenge method. But I don’t know which provider I should choose to autenticate (is this the word?) my duckdns domain using just the token given by Duckdns in the same way the duckdns add-on does. Is ithis possible??