The sign-up form used for trial and demo requests occasionally rejects legitimate business email addresses as invalid, preventing prospective users from completing registration on their first attempt.

Refine the email validation logic on the trial/demo sign-up form so it more accurately distinguishes supported business domains from unsupported formats, and consider adding an automated self-service path for a user to resolve a false rejection immediately rather than waiting on manual review.

Benefit: Prospective users can complete sign-up in a single attempt, without being incorrectly blocked partway through registration.