License for FotoMagico will not download

I have been working on a video with the 14 day trial and subscribed today, but the license would not download, saying “Invalid…”
I was working on the FotoMagico 5, because my MacBook Pro is a High Sierra system that only takes that. The License says FotoMagico 6. How do I get it to work? I want to continue the video I had started on the trial, to use for a wedding rehearsal dinner!