“Next” button doesn’t work in step 1

Hi!

I’m trying to go through the install process on my site. Installer and the Zip file have been transferred by FTP, only when I go to the Installer step one page, even if I have checked the T&Cs button, the “Next” button allows me to select it (blue outline), but it doesn’t actually function.

Any tips on what might be happening?

Thanks!

Screenshot:
https://photos.app.goo.gl/cMUpxkvkVW94LJFp6