Thanks for the reply! I went back and played through the rest of the game! The last two levels were a pretty good challenge!
Some more bugs I noticed:
-Level 12 is unselectable, even after completion. Your star rank appears grayed out as well. *This has been fixed!*
-Level 13 is unselectable, even after completion and appears greyed out. Star rank is displayed here though. *This has been fixed!*
-After beating the game (level 20) you appear on an empty screen with only the background showing. (Not sure if this was a bug) I was able to get back to the level select menu though. *This has been fixed*
-If you close the game, the game does not save your progress, meaning you'd have to replay all the levels again.
-If you press the cog icon for settings, then select a level, an extra red replay level button is visable and functioning.
Hope this mini-QA test is helpful! Thanks again for the reply and the fix! :)