Golf Shot Analytics not importing .csv from Garmin App

Help Please...
For some reason I can't import todays Range session into Golf Shot Analytics. Error msg says "The import file is not valid. Are you sure it came from Garmin R10 Launch Monitor?"
And yes, I'm sure.
And no, I haven't changed format... I had trouble on Saturdays session too, but somehow it worked after a couple of downloads...
What am I doing wrong? Is there a speciel sequence to this??
What I did was...RTFM...and followed it: From the Garmin App; Share/export via email to myself. Copy from email into dedicated folder. Import into Golf Shot Analytics from said folder...but alas?? (tried saving to desktop, and into cloud drive too.. no dice...)
Any advice most welcome. Pretty annoying to waste time on such stuff...