Sorry if I sounded rude. What I mean is that your issue doesn´t look like a general problem or bug but something more specific to your system. If it is the case and you can play other web games here in itchio, the problem will be probably related to the underlying engine the game was built on. If it is the case I´m afraid that I don´t have the knowledge nor the tools to solve it.
In a few days I will release a downloadable version, maybe you can try it.