We're sorry to hear that. Were you still able to play it? Make sure you play it in Google Chrome. We've been having issues with other browsers.
Unfortunately, I haven't set up a Chromium-based browser. All I have is the following log when I open it in any Firefox-based browser; I'm also running Arch Linux, though this shouldn't matter for web:
[C3 runtime] Failed to load all engine scripts in worker: TypeError: error loading dynamically imported module: <a href="https://html-classic.itch.zone/html/16795328/scripts/c3main.js">https://html-classic.itch.zone/html/16795328/scripts/c3main.js</a> workermain.js:1:897 InitRuntime <a href="https://html-classic.itch.zone/html/16795328/workermain.js:1">https://html-classic.itch.zone/html/16795328/workermain.js:1 </a>