Unable to schedule an exam at Pearson Vue

Hi! I'm unable to log in to Pearson & Vue to schedule an exam, with the following error message:

I saw [this question] which led me to this page:

https://learn.microsoft.com/en-us/credentials/support/help#how-to-submit-a-support-request

which in turn led me to the support page, where I'm supposed to choose "Learn" as the product family, but there is no such choice:

I have two questions:

• Can I get help with my issue here in this forum?
• If not, how and where can I get help with my issue (to schedule an exam)?

Thanks in advance!

Edit:

Seems the "Submit" button is attempting to access something that returns a 500 response: