My wife and I both have iPhone SEs, and iPad minis (original Retina version). Our phones are updated to the latest iOS 14 version, but the mini cannot go past 12.x. This means the minis are no longer able to see shared reminders at all. We use(d) these all the time in the past, and have quite a few shared reminders lists between us. This has rendered our iPads essentially useless for this application.
From what I'm reading, there is no actual solution here, it's as designed by Apple and basically they would expect us to toss the old hardware and buy something newer. Given that this is an unacceptable "solution" in my eyes...
Are there any 3rd party list-sharing-capable apps that will work on iOS 12.x, iOS 14.x, and macOSes as far back as Sierra (we also have some old macs that can't update further but are otherwise perfectly suited to our needs)?
EDIT: To add to this, I just realized that even our iPhones can no longer access shared reminders! Nor can my MBP I just updated to Catalina. WTF!? How can we get our shared reminders/lists back again??