Sorry to say but they are just stupid!
As they have a professional external verification, called IDNow.
Which does the verification process.
And IDNow does clearly verify Romanian Passports!
I did make a video chat with them.
...
I don't think they question authenticity of your Romanian passport, the issue seems to be more about which country do you reside in (IDNow positive passport verification doesn't help here). Again, it's an easy thing to resolve if they had procedures in place or were willing to resolve it.
It's a free market, just use other service, they're the ones losing profit, not you.
...
I am sorry you feel this way. But as I said we don't have the procedures in place to onboard you right now. And this may be a bad situation for you because you are an edge-case, but as soon as we have good onboarding for romanian citizens/customers, you will be able to verify your account.
You don't need procedures specifically for Romanians (or other nationalities), you only need to determine whether a person is a legal resident of any of the supported countries and therefore subject to their laws (their nationality is irrelevant really).