Rock4Life Template for Joomla under https

Years ago I bought the wonderful template Rock4life for a Band website (Joomla):

After a migration to another server, it don’t work with https://
When i set in Joomla Configuration https:// it will appear automaticly a blog post.
Without https It works well and the start page with pictures appear.

https on the server is well done, my provider said.
Could someone help me?
Sorry for my bad English

There may be some configurations need to be set properly. If you’re looking for paid support, I would be happy to help you: