when I registered, I entered the name of my favorite basketball player
Why is this a scam accusation then? No one is trying to scam you. You need to sort this out with Stake support and TBH they don't really have to do anything for you because from their point of view you're submitting fake ID.
I thought that this is a scam because no one has answered me for more than 2 weeks and when I upload documents in the account settings, it's rejected without any explanation. I tried to discuss with support, but my problem is still unresolved.