DEMO CONTENT

Hello,

I use a demo content to try something.
Then I wanted to go back to my already created demo content.
But he only shows me the old content for a few hours.

Then comes the new style again like demo content.
Even if I call my backup of a few days, the new styling
of the demo comes back after a few hours.

This is very stressful to work.
Because it always jumps back to the style.

What is happened? Can you help me to fix this problem?

Cheer
Vincend