Hello Hermien,
Thanks for writing in! When you install/activate/update the X theme, please make sure that the Cornerstone plugin is also activated/updated. Your issue could also be caused by a plugin conflict, amongst other things. Please check out this troubleshooting article here and follow the instructions for the following sections (where appropriate):
Testing for Plugin Conflict
Theme Update
Child Theme
CSS/JS Customization
Increasing PHP Memory Limit
Disabling Cache
Disabling CDN
If nothing is helping, provide us access to your site so that we can check your settings. Please create a secure note with the following info:
– Link to your site
– WP login URL
– WP username
– WP password
– WP Administrator Role
- Confirmation that we can access and make changes to your site
To know how to create a secure note, please check this out: How The Forum Works
Best Regards.