Thanks for helping me understand a little more.
I've heard from tech support and it appears that my permissions were such that I was trying to access a file that belonged to another user (even though that other user was me - but nevermind about that). I made a couple of changes and voila, it started to work as it was supposed to work.
And, I also discovered that the reason I couldn't shell into the account was because I wasn't using the "username@domain" but was using my email address@domain. I didn't realize that the username@domain didn't need to be a valid email address that I had set up, but was merely to be the user@domain. So, that's why my password didn't want to work. But. . . we're good now.
Thanks again for your taking the time to help me. It's appreciated!