Dear Jeremy,
Thank you for your answer. The last problem was caused by the content mismatch error (I was trying to use an http server). However, now that I have accessed another server (the https one), I am having the CORS error. The .htaccess file is in the same folder as is the .zip file, and it is exactly the same one that you give on your documentation. Here’s how it looks like:
https://morgunovakatya.ru/experiment/image.png
Do you know what else I might be doing wrong?
Best,
Katya