Hi jouan,
We have reviewed your website.
In this issue, you could follow again the steps below. Or add those sections again by clicking the plus (+) button. Because it’s can not happen and none of our other customers didn’t face this type of issue with this theme.
1. Clean your full database using wpreset plugin “OR” reinstall a new WordPress with a new database
2. Then install the latest version of the theme (follow the steps from the provided documentation)
3. Then install all of the required plugins (follow the steps from the provided documentation)
4. Then active all of the installed plugins (follow the steps from the provided documentation)
5. Then import all of the demo data (wait until all of the demo data are imported completely)
Then please let us know the result.
Best Regards,
ThemeLooks Support Team