i have all permission aproved for group post
but why if i posted to group always noted as spam by facebook
i am post to my own goup and just say hi
If you post get spam, First of all Appeal for it from notification click. Tell them that it's not spam. If it's not anything violating then Facebook review will turn it back again very soon.
Secondly, during posting in group, try to post good content. Not like test , testing or hi etc. Try to post full message content as you post for your group members.
It's a Facebook filter system which may catch post as Spam. Sometimes it's may mistake of the Facebook filtration system also.