Thank you! Good to hear!
It's not intended. Using the on screen buttons should have the same effect than using arrow keys. For some reason I had problems with getting the press end action to work for those buttons and I had to leave to not working state because there was more important tasks on the todo list. I will hopefully fix it after the jam. Leaderboard problem is also a known issue that I have not yet solved. It is most likely related to LootLocker.