I have seen mixed reviews from gotogate. Some said they got a FULL refund after flight cancellation, so if it's true they are not as bad as ticket.se. I also saw people have issues to get them to re-issue tickets (no idea if they paid for the service package or not). I had to take ticket.se to the ARN (consumer ombudsman in Sweden - good that we were living in Sweden at that time so we were able to use it vs. if there is even one in Denmark that you can use it for free). ARN suggested them to pay us the fees back as we have never told them to cancel the flights - it was the airline that cancelled it, not us, hence they should never have charged a cancellation fee from us.

Once I used tripmonster and the flight was cancelled by CA (due to the pandemic), they refused to refund me the $ so I got my CC issuer to reverse the charge after 6 months - after I went through DOT to get a confirmation from CA that they have indeed refunded the $ to tripmonster.