I have created a premade group for Ordos.  But everytime I invite someone to join the group it says they have joined, but then immediately says they declined the invite.

BTW, the same is happening to me when I try to join a group.  It invites me and then immediately says I was removed from the group.
 

What version are you running?

Are you running any addons like Elvui, other others, which will auto accept / decline friend invites? If so they are probably causing a conflict. 

I am running 1.8.2a.  I am running the same addons I have always run before getting oQ.  It used to work before the last 2 oQ updates.

The only addon I use that auto accepts is RaidBuffStatus.  I will try turning that off and see if it works.

Update:  disabling the addon did not work

are you running dbm?

Yes, I tried disabling it and still not working.