Hey! Oh, sorry to hear that, but it's probably because it requires some minimum hardware. Especially in the browser, it has a lot of intensive lights, shadows, many objects at once, and VFX, which are costly on the CPU and GPU. So it's probably that, not enough power to run the game sadly.
I hope you'll have a chance to play it another time if you get access to a slightly more powerful system. Maybe keep it on your list and come back to it later?
Cheers!