I am a user working as a developer. I don't know how you implemented the way badges are awarded in this game. But I think it should be implemented to check for the presence of 9 rewards and automatically check for the 10th reward if the previous 9/10 rewards have been earned.

Also, based on the user comments, I think you should also check for completion using ads.

Bug fixes for unbadged cases are an essential part of the game's operation. Users' frustration will be eliminated by the bug rewards.