Plugin conflict? (with Simple Calendar)

Hello,

Thanks for a simple and useful plugin. However, there appears to be a conflict with the ‘Simple Calendar’ plugin. The button in the header comes up with “Insert Calendar” rather than “Update Page” and clicking it does indeed insert short code for a calendar rather than update the page….

Website runs the Travelify theme.

http://www.futuredigital.info/

Thanks in advance for any help you can provide.

https://ww.wp.xz.cn/plugins/toolbar-publish-button/