Thank you for your fast reply. This is more than an unfortunate situation.
With all due respect, I think you misunderstood that.
(The 2010 document is ratified. Only the newer 2019 version isn't.
But the interview relies on the 1979 convention.)
Here is how it looks now:
USA-HUN Convention - 1979 The interview uses this version, but it's outdated!
USA-HUN Convention - 2010 This is the current, legit, ratified convention.USA-HUN Convention - 2019 Not yet accepted convention.
Can you point out for the third party company that the database is incorrect?
I mean, you're in a business relationship. This is not some misconception of a random user. There is the official government site I linked earlier in the post. They can check it. The point is, I have to tax my income here no matter what! But the law gives me the opportunity and protection to avoid double taxation and pay my taxes in my country.