So could you please try to follow the comment of that topic ? (you can ask your hosting provider in case you don’t know about this config)
Everything is working fine now.
If the problem persists, you can try to deactivate all your plugin (once by once, except WPBakery Page Builder and TLG Framework) to see if the problem is gone or not.
In case it’s still not work, please share us the admin account of your site via private reply so we can investigate your case and help you out. Also, please point to specific page where we can see the problem. Any screenshots would be welcomed!
P.S: I recommend you to use the Back-end editor for better editing your pages/posts.