@tonk,
The other issues reported here and here appear to point to either a theme conflict or plugin conflict on your website. For all these issues, we need to do a little bit of troubleshooting to find out what is going on. To help us find out what is going on, we need to:
- Rule out potential theme conflicts.
- Rule out potential plugin conflicts.
Rule out potential theme conflicts
Please temporarily switch from your current theme to any other default theme on your WordPress site. Then, check your website again. If the problem disappears, then is some conflict with the theme. If there is a theme conflict, please update your current theme if there is an update available. If there there is no update available or the update does not fix the issue, you can also reach out to the support team of the conflicting theme.
Rule out potential plugin conflicts
If the issue persists after you switched to a default theme, please deactivate all plugins on your website except the LifterLMS core plugin. Check to see if the issue disappears. If the issue disappears, then there is a plugin conflict somewhere.
If there is a plugin conflict, reactivate each plugin one at a time until the problem re-appears. If you find the conflicting plugin, please update the plugin if there is an update available. If there there is no update available or the update does not fix the issue, you can also reach out to the support team of the conflicting plugin.