selected category checkboxes forgets what was the input after posting

Hi,

And thank you for the great plugin. As the title describes, I have one form, with 8 text area input and 3 multiple category selectors with certain category id-s as checkbox input. After the post was published it gets into the drafts, but when I try to edit the fields, I recognised that 2 of the 3 checkbox lists are completely empty, it just forgets what was the input. the settings are the same. To get it visual please check this site segedanyag.com/file-feltoltes Its in hungarian but the blue and yellow fields are not saving at all. Do you have any ideas? The settings are the same everywhere…

I have a smaller question as well. Can you send an email about the post update to one of the email address I got as a custom meta, with the variable like %custom_customemail% as in the message?

Thank you!

https://wordpress.org/plugins/wp-user-frontend/