Yes, I disabled the plugin after importing your field group and the field keys were still wrong. If I delete the field that was created while that plugin was active and then recreate it as a normal text field everything works.
You can’t continue to use that field group. Editing a field will not correct the field keys. The field needs to be completely deleted and recreated.
You may have other issues going on as well, but I saw the same thing you reported, fields not saving. I deactivated the plugin, created new fields and the new fields saved as espected.
Welcome to the Advanced Custom Fields community forum.
Browse through ideas, snippets of code, questions and answers between fellow ACF users
Helping others is a great way to earn karma, gain badges and help ACF development!
© 2022 Advanced Custom Fields.