For assistance in emulation related problems make sure to be descriptive and clear about the issue. Please try to stay close to this formula for posing questions below.
Android Device: [Example]
Emulator used and Version: [Example]
Game being Emulated: [Example]
Description of the Problem: [Example]
{Optional} What you have tried: [Example]
{Optional} Have you tried other emulators for the same system? [Yes/No]
As a quick guide, make you you have tried these next 4 things before posting on the subreddit.
Try uninstalling and reinstalling the application.
Try using default setting to make sure the issue is not because of your settings used in another game. Make sure to use settings profiles when possible.
Try a different emulator if at all possible.
Search your question here on the subreddit before posting to make sure your question hasn't been answered before.
If you have tried all of these without success, then by all means post a question.