I think you need to make it manual approve

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Because if anyone can join, then that will make it so spam is more likely to happen. Think about that other site, ROBLOX, that's how it went at the very beginning, want proof? check out all the banned 06 users. We just need a basis - I'd be willing to help the approval.

Here's the thing, they have to add information about them, i.e. "I like helping" sort of like a bio. Or something along those lines.

Also, here's a random generator I made (Yes, I'm Zontafer, yes, I made the logo)