Mahboob Ur Rehman wrote in #note-1:
> Yes we use Learndash to add courses . That's why we were talking about license of it.

Can you fix this?

LearnDash support:

I have updated your LMS license to the domain frankspillers.com. You're all set!

You can update the domain registered to your license at any time. You will need to remove the old domain from the license before you add the new.

On the old (original) site's WordPress admin site, navigate to LEARNDASH LMS > SETTINGS > LMS LICENSE

1. Remove the email & license
2. Click 'update'
>> license field is now empty

3. Go to your account in https://account.learndash.com and delete the domain from the Sites tab.

4. Enter email & license on the new site under LearnDash LMS > Settings > LMS License and click 'update.' (Please ensure you have also downloaded the latest version of the plugin from the Subscriptions tab of the LearnDash Account.)
https://www.learndash.com/support/docs/getting-started/installation/#activate_your_license

The new site should authenticate (give it 15-20min if you don't see it right away) however, if it does not within 24 hours, please write back and we'll be happy to further assist.