I just purchased this theme jevelin for my website.
I have imported demo content. Went to edit an imported page and the edit page seemed broken. Tried to add a new page it was also broken.
I searched the support forum, it says that the issue could be related to WP Bakery and to downgrade to version 6.0.2 of the plugin. I did that but the issue still persists.
I am attaching the screenshots for details.
Hope this gets solved soon as I need to go live with my new website.