Well, I've contacted support for the 3rd time, and they refuse to even give me an idea of what's wrong. They say my first account has been permanently deactivated, with no possibility of reactivation, despite me providing proof. My second account has been deemed unsuitable for a seller profile, despite the high quality of work I provide (examples attached below).
These are all my creations which I provide in competitive prices (between 30$ to 150$ for larger projects).
Also, there's no indication that my second account violates the term of service, nor did fiverr claim it did. They simply refused me to host my creations here. I will be most likely moving to a more professional platform. Thanks everyone for your inputs.