Microsoft Form Stopped Working

I set up a form over a month ago and it's been working just fine.

All of a sudden - sometime over the weekend since I last clicked it - it stopped working on every browser I've tested it on (I get an error message), except it still works on Microsoft Edge.

https://forms.office.com/Pages/ResponsePage.aspx?id=e7_QvbWxAUiTophSN25OTISOyRb0iGRLjVWsUaLn54FUMVBKTEFQQjZUMlNNNlI3RzQxUEJaWjE0Uy4u

Can anyone help?