Hi Sub-Zero Squirrel,
thank you so much, you just discovered a bug.
I let a code in that point that works only with the touchscreen for the mobile version.
I have uploaded a new project with the fix.
Your game progress should not be changed.
You should be able to start from where you are now.
If it's not, write me again and I will send you a cheat code to unlock the levels so you don't have to start from the beginning.
Sorry for the inconvenience.
Do not hesitate to contact me for any other problem.
Thanks again for the help and thanks for playing.