Happened to me too, had to reload a couple of times. Not sure if it was intentional, but realistic anyhow xD The only thing missing is random loading times between each step.

Same but I think it's intentional as it says we have saved your progress and time at the top, after refreshing

Might be popup blocker in the browser? I saw something flash, a quick popup right before it "crashed" on my end.

If you have an adblocker, it's likely blocking the ads (part of the game).