Why hubspot forms think my domain is invalid

[gio8888]

I'm trying to register to an online form powered by Hubspot.

Domains ending with "ai" are valid. My domain turingmachines.ai is valid. My email is avlid. Why is Hubspot forms not accepting it?

See screenshot: https://drive.google.com/file/d/1G2JMR6I0yWkurpiF-ZGT9Cn1AkdxTdZd/view?usp=sharing

[Ben_M]

Just because the form is registered with Hubspot does not mean that Hubspot owns/maintains/operates that form.  With Hubspot as with many solutions, a site owner can restrict domains that are allowed to submit a particular form.  Have you contact the company whom you are trying to submit the form with for assistance?

https://knowledge.hubspot.com/forms/block-form-or-pop-up-form-submissions-from-specific-email-domain...