Hi Mario,
I added an option to the settings for the next version of the add-on.
In the meantime you can add this CSS:
#gwolle_gb_preview {
display: none;
}
And it is true that the meta fields are not shown in the preview. They are not available from the database, I am not sure how to change it that they are visible. I will think about a solution ??
Just a question, when you buy the add-on at Mojo, do you get access to updates? Or would you need to buy again?