Simon - Button Not Flashing Twice

Hey everybody!

I am almost done with the Simon project. However, I’ve run into a small roadblock. For some reason, when ever Simon tries to perform the same button press twice in a row it is not properly showing the button press or playing the audio file.

You can find my Simon project here:

I appreciate any and all suggestions regarding this project!

Thank you in advance!

I somewhat fixed it. If you go to the app, it is now working when a button is pressed twice. However, the sound is still a little off if the button is pressed three times in a row.