Thanks for reaching out and sorry to hear about those problems. This behavior is typical for a jQuery error. It’s usually caused by some outdated components – can you check, if you have installed the latest version of WordPress (v5.8.1) and Divi (v4.10.8)?
If both are up-to-date, then you’re possibly using a child theme or a plugin that loads an older version of jQuery.
Maybe you have installed the "Enable jQuery Migrate Helper" plugin (if yes -> disable it)
Let me know if you could solve the problem with those details, or if you need further assistance.
Thanks, Philipp 🙂