Thanks for writing to us.
There might be a few different reasons for this issue, I would suggest you troubleshoot with a few of the common issues:
- Testing for Plugin Conflict
- Child Theme Issue
- CSS/JS Customization
- Disabling Cache
If none of the above help you, please open new thread explain your situation and also provide your credentials. Please share your details in a secure note. Please provide the following details
- WordPress Login URL
- Admin level username and password
You can find the Secure Note button at the bottom of your posts
It would better if you could copy your live site to a staging server and share your credentials of your staging site so that we can investigate your setting freely without breaking your live site or main site.