WordPress Media Library Not Working with Thrive Content Builder or Thrive Leads
If you find that you're unable to add images through either the Thrive Content Builder or Thrive Leads, then it's likely that you are suffering from a conflict with W3 Total Cache.
To fix this, we suggest that you disable minification for logged in users.
Step 1. Go to W3 Total Cache Minify Settings
Step 2. Disable Minification Only for Logged in Users
You can then click on the blue button to "Save all settings".
You will then be able to edit your content and the media library will work without any issues.
If you are running a membership site that will be delivered to users who are logged in, then you may wish to use this alternative solution to retain performance for logged in users.
In the W3 Total Cache settings, you can set minification to be turned off for URLs that contain the suffix "?tve=true" or "&tve=true" as shown in the following screenshot:-