So, I tried testing an unpublished by following this guide: https://developers.google.com/workspace/add-ons/translate-addon-sample . However, after hours of trying I'm giving up because all I get is
You’re offline. Check your connection and try again.
I double and triple checked everything, every authorization step, gave all the appropriate permissions, did everything in the guide, but I can't get the sample to run. No matter what I do. Given the sample is from Google themselves, can anybody give me a hint what I'm missing?