Incompatible with "TOC " plugin.

I’ve just installed both TOC+ and Insert Pages on a test site, and both work fine together. Perhaps there is some bad code in your theme causing the conflict?

If you can provide more detailed error logs or specifics I can try to help, but I’m pretty sure the plugins coexist peacefully.

Actually I just reproduced your issue: turns out TOC+ works fine as a sidebar widget, but disappears when in the main content area. I’ll look into it.

This answer from another support thread has the answer you need:
https://www.ads-software.com/support/topic/keywords-tooltip-generator#post-6895501

Basically, either change the filter priority of the TOC+ plugin to 11 or less (instead of 100), or disable the_content filter in Insert Pages.

Thanks, Paul.

Sorry for not replying earlier.
I fixed the issue by changing the filter priority of TOC+ plugin. Here’s a guide that helped me https://devblog.virtage.com/2011/04/en-how-to-set-wordpress-plugin-filter-priority/

Thank you for your time!