On this page: http://sdf.org/?tutorials/donations it says there's 2 ways to donate. However neither of those seem possible for me.
-Paypal: In Slovakia it doesn't give me the "Pay as Guest" option and I really don't want to create PayPal account. And even if I wanted, I can't because I am not 18 yet.
-By mail: This seemed like a possible option. However I found that Slovak Post forbids sending banknotes or coins of any value via regular mail (for which shipping would cost €1.60) and instead only allows them in insured packages in which case the shipping would be €20.50 💀
Is there a different option, maybe something like OpenCollective or similar? (It's possible I missed something)
I don't need to donate to get verified, I got verified by different user already, I just want to.
Thanks.
That's cool that you want to support. If you are able to do everything you want to do here then your presence is your support :-) .
I'm not sure if it is a viable option but you might email @membership and request a PayPal invoice. To pay as a guest through PayPal you would need to receive a PayPal invoice. I have no idea if this is a thing SDF does.