Registration link not working

[RNSK]

Hi,

our registration to GoToWebinar is not working (no matter the browser, tried Mozilla Firefox, Chrome, also via Windows computer and iPhone) - when somebody fills in the details in the GoToWebinar registration form, then clicks Register, the Register button stays grey and nothing happens. It doesn't go through.

The link includes tracking parameters: https://register.gotowebinar.com/register/XYZ?source=NL?utm_campaign=ao_$brand_*world_@nl_%3epartner...

On purpose, I've put XYZ instead of the webinar number.

Why is the registration not working? It loads well the registration form, but the registration itself is not working. Could it be that GoToWebinar has problems with the UTM tracking parameters, or?

Can you help? We have an important upcoming webinar.

Thank you!

[gtwtf]

Hint: Your hyperlink is still complete.

Question: Did you check the box? Normally, that's it. But do also check your security settings and running blocker add-ons.

Btw: How is UTM working, when you are not the URL-owner? I tried this and it did not work.