None of the Android apps that I’ve tried will use the SD card as storage.
Here’s what happens with Netflix, Amazon Music, and Google Maps (Android apps installed from Google Play):

1) Netflix
– downloads to Internal Storage work as expected
– when I select the ‘Download Location’ option in the Netflix ‘App Settings’, the only valid storage option given is ‘Internal Storage’; a message states, in bold, ‘No External Storage’, then goes on to say ‘Install a storage device (such as an SD Card) to change your download location’
– so despite all of the permissions being correct, Netflix doesn’t recognize the SD card

2) Amazon Music
– when the SD card is disabled and I go to ‘Settings / Storage’, the ‘Storage Location’ is greyed out (as you might expect because only the Internal Storage is available); the ‘SD Card Status’ has a red dot and states ‘Your SD card is offline’
– when the SD card is enabled, ‘Settings / Storage / Storage Location’ gives options for ‘Internal Device (45.1 GB free)’, and ‘External SD card (0.0 GB free)’; the ‘SD Card Status’ still has a red dot, and says the card is offline; when I select the External SD card option, a pop-up states ‘Your SD card is read only. Please repair or change your SD card.’
– so although the app recognizes that there is an External SD card present, it seems to think that it is unwriteable

3) Google Maps
– downloads to Internal Storage work fine
– while setting the download location to the SD card in ‘Settings’, it indicates 244GB available; but when I try to download a map, a pop-up message states ‘Something has gone wrong; please try again in a few minutes.’

I have tried formatting the card as FAT32 and exFAT. I have followed tutorials to use the CMD file on a PC to ensure any read-only attributes that may have existed on the card are removed.

Any thoughts on what the problem could be? Thanks!