Jim Ponto lists their support for bunq as “experimental”: https://myponto.com/en/reach?name=bunq#banks
So it would be nice if you could get more details from them other than “Its on the Bunq side”
bunq has one of the best PSD2 integration APIs out there so the service you are trying to use has to get some more work done to establish the interoperability. Hopefully another user can chime in if they got it to work though.
