How do I find serial number for iWork '09?
I have run, and paid for, the Apple suite of word processor and spreadsheet programmes for decades. I am now using the latest (Pages 6.3.1, for example) under High Sierra. I tried to open the previous version, still in my Applications folder, within a folder called iWork '09, because I am trying to open an old file with a .cwk suffix.
But when I did I got a window asking me to enter my 'purchased serial number'.
a) Since I used the previous version for years, why am I being asked now for a serial number?
b) Where do I find such a number? I assume I purchased iWorks '09 via the App Store, but there is no trace of it there
I have read several similar enquiries from others, but haven't managed to find an answer
MacBook Pro with Retina display, macOS High Sierra (10.13.3), 2.5 GHz Intel Core i7, 16 GB RAM