Does anybody know if paying on GoG can be done through PaySafeCard in Belgium? I know we can get pretty much anywhere paysafe here, but i don't seem to find the option for it on GoG...

Can't help with Belgium but the Netherlands has it available at least, though I've never actually used it. Ideal is too convenient.

Should be, at least that old post was just listing Canada, Croatia, Finland and Mexico as having problems with it and them needing to disable it there (and I think they had fixed for Finland at some point). But no idea if more problems didn't appear for other countries since. A quick search doesn't turn up anything for Belgium, but...

If it is available, should be there in the options on the checkout page, like so. If it's not, guess there is a problem that they needed to disable it for, should contact support to see what's going on.