I purchased the goblin bundle and got my email receipt for the purchase but when I try to play it, it shows I still need to purchase it even though I already paid for it what do I do now?

For me, sometimes my purchases don't show up as available until I restart the app. I play mostly on PC via the app on Steam. Not sure if that will solve your problem or not.

Also it is important to check that pdif is the same before and after purhase!

Sometimes system updates has caused havok in that aspect. If pdif x make the purhace and pdif y log in the purhase for x is ofcourse not available to player y even the physical Person is same.