Problems installing PSE 2019 from download

[davidcushworth]

I have a 2012 MacMini running High Sierra.

I downloaded PSE 2019 from my pourchase history and instal;led it (PSE 2021 wont run on this system), but when I come to open it, I get a message that the app is damaged and needs tyo be downloaded and reinstalled.

No matter what I do, still the same message.  The installation is directly off the Adobe web site.

[davidcushworth]

For some reason the screenshot didn't upload properly