Beta updates should not be enabled on production sites with live traffic.
When we release a beta version of the theme, you’ll need to manually install the new version on top of your existing version.
If you’re installing the theme on a fresh WordPress install, you can just download the .zip file inside your account, and go to Appearance > Themes > Upload Theme in your WordPress Dashboard to upload it.
If you already have the theme installed, doing the above will result in an error telling you the destination folder already exists. We can get around this error by installing this plugin first. This will allow you to upload the .zip file as if the theme doesn’t exist yet.
Alternative, you can opt in to receive beta updates in Appearance > GeneratePress which will serve beta updates directly to your Dashboard as a regular plugin bug.