Mick,
Sorry, but that has caught a few people out. The "Floating Action Button" menu items require the button to be pressed and not the label. We have changed away from this style of menu in the latest version of MapRun (MapRun version 7), partly due to this potential confusion.
The various versions of MapRun are described on the website:
https://maprunners.weebly.com/versions-of-maprun.html.
The summary on MapRunF is that it has been replaced by MapRun6. We like to keep two versions available in case of any technical/compatibility issues on various phones. But with MapRun version 7 now avaialble, we will remove MapRunF from the App Stores in the near future.
Peter