I have a 2011 MacBook Pro running High Sierra that for security reasons has not been connected to the internet for quite some time. I use it to keep and update some documents and spreadsheets. There's a secure delete app that I've used without any issues but all of a sudden when I try to run it I get a message saying it was purchased using the app store on another computer and in order to use it I have to sign in using the Apple ID and password used to purchase it.
Why would this message suddenly appear after all these years, especially as the app was not purchased on another computer. I'm not going to connect to the internet so is there anything else I could try?
Why would this message suddenly appear after all these years, especially as the app was not purchased on another computer. I'm not going to connect to the internet so is there anything else I could try?