How do আপনি make a back-up account?

Honestly, I don't think it's allowed, but many people do. It's not really a big deal. I think আপনি have to use a different email. Why do আপনি need one?

Ya, I think আপনি can, but they're highly discouraged. Also the F4 can tell from your IP address if আপনি have multiple accounts, and they can shut them down if they're being used just for ratings, অথবা if someone uses one to be outspoken on. I've seen people be banned for both uses.