Hi…,
From your screenshot, what happens when you click on Export Flight Plan highlighted in red (It works on my MAC OS) :
Export is not currently provided on iPad as per https://forum.navigraph.com/t/it-is-not-possible-to-export-flight-plans-on-ipad/9680/2
However we shall consider adding it in a future update as per iOS iPad missing .PLN File Import and Export - #4 by stephen
Cheers
Ian