When I started to the import, I’m getting an error from the beginning of the import Elementor Addon Elements:
Unable to connect to the filesystem. Please confirm your credentials.
I’ve tried changing the file permissions & sub-directories of wp-content to 777 but still the same issue. Changed it back to 755 of course.
This could be an issue with the owner/group settings on your server. You should receive the same error when trying to install a plugin in the Plugins area of your Dashboard.
I would report this to your hosting – they should be able to fix it.