Calibre Companion asking for Calibre Password

I use CC on my iPad Air with no problems connecting wirelessly to my desktop computer where Calibre and library are. However, I just downloaded and installed CC on an Amazon Fire 10 tablet that I received, and when I try to connect wirelessly CC insists that I enter my Calibre Password.

Problem: My Calibre library on my desktop isn't password protected. What is going on?

Thanks

Greg