Thanks! The engine is Construct 3. All the sounds were made using ChipTone and the music is in the game description.
Recent community posts
I just pushed the 1.0.1 build which (hopefully) resolves this issue. You may want to clear your cache, just in case.
Movement controls are enabled once the best score's been retrieved, but it could potentially fail, preventing the game from giving you control. I added a failsafe to enable controls right away and disable the best score in case that happens.
Please let me know if this fixes the problem, or if this still happens.