HANGING - Glide doesn't work

I just recently discovered glide apps.
I’m trying to create my first app with google chrome and once I’ve selected the goolge sheet that I want to use, the web keeps thinking all the time without any message or result.

I’ve tryied different sheets.
Could anyone let me know if I need to do anything on the sheet or on Glide to start create apps?

Thank you!

Can you provide me with a screenshot of whats going on?