If the post ‘213’ is a real post which contains field groups via location rules, then the field_groups param is not needed. Please remove it from the array.
Please also note that you do not need to include all params, just the ones you want to customize. What you are entering are the defaults.
You can find the field group ID by editing the field group and looking in the URL. You will see a post_id=xxx
I don’t understand your other questions.