Another way to more simply log into Meshy is with a verification code that is sent to your email address.
On the login screen, enter in your email address, and click "Get Code":
From there, you'll be notified that an email with your code has been sent to your email address.
In your email, you'll receive a 6-digit code. Use that on the code prompt, as shown below:
Then, click "Continue", and login.