macbook won't recognize my Kindle Paperwhite
I've been connecting my Kindle to my Macbook for several years. Suddenly my MB stopped recognizing it. I have tried different dongles (Apple and non-Apple), different USB ports, different cables, even different MB's. I have restarted my MB, restarted the Kindle, done a factory reset (complete wipe) on the Kindle. Nothing works.
Amazon claims it is a change in Apple products that no longer recognizes the Kindle and can be easily fixed by some unspecified remote intervention that involves a port reassignment (?) by Apple. I'm suspicious, since one of the MB's is still running it's original Mojave (10.14.6) because I have legacy 32-bit software and I keep one machine "old" to run the 32-bit software.
Does anyone know what to do, or have suggestions?
MacBook, macOS 10.14