It's advisable to always first have your account verified if you are planning to use a platform that asks for KYC verification. This will help you to avoid any forms of inconveniences. If the verification fails, well, you don't deposit anything there. Simple.
Directly on the website, followed by email. I'll try sending him a PM on-site, although it says he was last online on 1/12/2023.
The suggested profile might help solve your problem. I have seen them help quite a number of users. Don't lose hope.