Hi @guido1981 , this is a really simple fix, but I just don’t provide much/any support for this plugin at the time for lack of time, motivation and interest (don’t use it in any of my projects anymore).
My suggestion would be to to hire a WP dev on upwork/fiver to add the setting they need. It’s really 2 step process (can use it as part of job description):
1. Update Gravity Forms feed setting and add new Publish Date option
2. Update class-post-update-addon.php->process_standard_post_fields method with publish date processing
Technically any decent WP dev should be able to do it within a day or less.
Codebase is here:
https://plugins.trac.www.ads-software.com/browser/post-update-addon-gravity-forms/
Or here:
https://github.com/AlexusBlack/post-update-addon-gravity-forms/
Additionally you can ask hired dev to do a pull request with their code on github, I’ll review the code and push it a new version to wordpress so you can update normally. But only if code is decent.
Sorry that I can’t help you directly. Have a nice day