Hello there, i have pretty much the same issue.
i am a developer of a game with above 1 millon MAU and have not yet received it.
i heard only the owner of the game gets it or the owner of the group if it’s a group game (not the developers sadly, i suppose this is because people submitted requests for such crowns in games that they are not a developer of) and sometimes even if eligible they can take a long time to give it.
i have tried contacting devawards@roblox.com althrough it seems that that email is dead, i did contact roblox support but they basically said they cannot help me, this is what they said to me:
Unfortunately, in CS we are unable to do anything further to help you with your question.
CS = Customer Support
Would be cool if the developer awards program could be managed better.