>>53255128This shit is a bug.
If you have bad network connection when you finish a mega raid, the game defaults to the old rates for awarding energy, and only gives you the default rewards guaranteed outside of additional bundles based on battle performance.
I had similar happen recently with a Mega Gardevoir raid where my connection shit the bed and I only got 50 energy, 2 golden razz berries and a charge TM for the effort, whereas other players in the same group got 150 energy and proper rewards.
This means that primal raids have no default item rewards, and you only receive rewards based on bundles per raid performance.
I recall the rewards and premier balls awarded for beating mega legendary raids being unusually low too and Niantic never considered address that.