Hi,
I can see that your site is throwing console errors – https://share.getcloudapp.com/d5uAXrOR
Please make sure that you have the latest free version of MetaSlider installed on your website.
Also, this issue might be caused by another plugin/theme. So, please check if this issue happens when only MetaSlider and the Twenty-Twenty One theme are active.
You can then try activating the plugins one-by-one until you find out which of the plugin is causing the conflict.
Let me know how it goes.
Kind regards,
Arreane