This is the url:
I visited your shared page and it displays same for me as shown in the attached screenshot.
The post content text size is controlled separately in the theme Styling settings as shown in the attached screenshots.
I have tested it on my test site and it’s working fine for me using latest version of Gillion theme.
Please make sure that you are using below latest version of the theme.
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Also, would you mind if I log in to your site and do some troubleshooting? If this is ok then could you please temporary share me your site admin log in details privately by adding them in the box having text “Enter your private content here (only you and forum moderators will be able see it)”?
I could confirm the issue by logging into your shared site.
This can be due to plugin conflict on your site so please try temporary deactivating all plugins except Unyson plugin and WpBakery page builder plugins and see whether everything works fine and then enable the plugins one by one to see which plugin is conflicting if any.
The path is different because years ago I had prepared the new site with an installation on the food folder. Then I made it principal. I assure you that this is not the problem because I have never had problems. Even your theme never gave me problems until some time ago.