error email address when sign up to the early access list

Describe the bug When I want to sign up for the early access, I tried several email address. But they all showed that: Please use a valid email address.

To Reproduce Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior A clear and concise description of what you expected to happen.

Screenshots

Additional context Add any other context about the problem here.