Recaptcha not working when moving website from http to https

Good day folks,

We recently made a migration from http to https in the website and we noticed the plugin was not working in the log into wordpress and the contact form anymore.

We would like to keep using this feature. We are not too saavy when it comes to coding but we are fast learners ??

Could you give us a hand please?

In advance, thank you for your help and interest.

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