Can’t Apply A Kit

Whenever I try to apply a kit from hello biz setup plugin It just gives a 500 error, reason for that error is that it’s not able to download the required files.
It sends this request:
https://piramittek.com/index.php?rest_route=%2Felementor%2Fv1%2Fkits%2Fdownload-link%2F67446ce1bda2e2012a73bbcc&_locale=user
But this request responds with 401 unauthorized and prevents the application of the kit. I tried to disable cloudflare thinking it might be caused by that but no.
I honestly have no idea what to do, is there a place to download kits manually?

The page I need help with: [log in to see the link]