OK I see you already found that Verizon guide page, looking at your previous thread.
So the card in
sd card storage shows the size available and some DCIM (Digital Camera IMages), ringtones and other folders.
Maybe you do have a problem with the card mounting but it's displaying Storage correctly.
You can "Select" by pressing on a photo or file in Internal Storage, but there's no card to move it to?
You can't move some apps like Google ones, and it's pointless moving other apps as it's only partly moved and temporary.
Catch a plane over here and I'll look at it.
Do you wanna try that SanDisk
Memory Zone app again on this one? You can't download a Move to sd card app from the Play store app on the phone? I don't know if they are any good.
Dump some screenshots of what you said above that you are seeing if you want. I'd gotta have it in my hand, and i don't own a Samsung. I also don't know if you missed what the steps outlined were saying in sequence. What Samsung One UI version do you have under about phone. One UI 2.0 ?