Oh wow thats so strange! What browser do you use? I assume chrome? It should work for chrome, but maybe not? It uses the opera GX browser export so not sure what all that entails? So sorry that happened to you!!
You can also play it on mobile too if that could help? I have android and know it works from there (but again, with chrome I think). Sorry! Might be something a bit out of our control with Gamemakers engine! :(
Once we release the demo (next couple of months as we are very close to done with it) it will be available for download on PC for sure!