[metalmcguire]

I really appreciate your response, musicman691.

I hadn't thought about that and most likely my phone was somehow connected to my Macbook Pro at the time.

I'm now running into the problem of not being able to locate a full version download of macOS High Sierra. I've just bought a new external HD to make sure that I'm all backed up and ready to proceed with (hopefully slowly) upgrading my macOS versions to see if I can remedy the issue in subsequent versions without jumping straight to Catalina in hopes it's going to solve everything and then have to revert backwards again anyways...

Every time I try to navigate to the High Sierra download it brings me to the App Store and then proceeds to say, "This copy of the Install macOS High Sierra application is damaged, and can't be used to install macOS." Any ideas of where to find a working version? Or does Apple just not supply/support a full version upgrade of High Sierra anymore?

Any suggestions would be helpful and greatly appreciated. Thanks so much!

Looking forward to hearing from you guys.