Hello Bénédicte,

thank you for reaching out to us!

I am sorry to hear this happens; can you please advise and try the following:

• Is your Amelia updated to the latest version 3.1.2? 
• Please try clearing out the cache
• Have you made any plugin / theme / CSS changes on this page before this happened
• It can be a Vue conflict; please go to Amelia > Customize > enable the slider Use already loaded Vue

I would like to make note that I have visited your website, and that the calendar still loads quickly on the page you provided (15 seconds and less).

Hi Bénédicte,

thank you for letting me know!

Don't worry, ticket will be closed in a few days - it's just important for me that the issue is resolved, I can even close it manually now.

Still, if you have any further questions, please feel free to open a new one.

I wish you a great week!