I just buy, when I press "register license" button, it return the follow message:

"An unexpected error occurred. Please try again later. If this error persist, it’s most likely a web server configuration issue. Please contact your web host and ask them to allow external connection to the following domain: repository.kreaturamedia.com. If you need further assistance in resolving this issue, please visit https://layerslider.com/help/"

I try to figure it out, and I visit https://repository.kreaturamedia.com/

it return the follow message:

"

You don't have permission to access this resource.

Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request.

"

Please advise me.

It has been successfully registered after giving it another try. Please close the ticket.