Mac Mini OS 14.6.1  with Firefox 133.0 and Thrive 10.3.  When I fill in and press a sign up button it will not send the Email information, but will scroll to the top of the page.  /#  There is no Success Page or Information.

It seems to be so with all Optin Forms from Thrive with my Firefox. On Safari and Crome it works.

Using a Window Laptop and Opera Browser sometimes it showed "An error occured while submitting your data. Please try again" but the optin took place, only no redirecting took place.

MS Laptop and Firefox Browser: Like Opera,
MS Laptop and Crome Browser:like Opera

iPhone Firefox: error + optin took place, no redirection

Below are Optin forms for trial