I couldn't find a way to edit the original sign up site details hence created a duplicate site which generated a unique
The pin remained the same.
(Not really a problem as I still had it listed in Cumulus Internet settings but I needed to affirm it on the WOW site.)
Logged on to WOW, Chose "My Sites" option then Edit.
The pin is displayed on the Site Details section headed Authentication Key
Like others, I have found the various field terminology and descriptions to be confusing.