I've read many posts, watched many videos, watch many Garmin and basecamp tutorials.
I don't know where my problem lies.

Should it calculate my trip I sent from basecamp if I'm sitting at home but my starting point of my trip is 3 hours north of me?

I've been able to transfer one route from ...

Welcome to the forums. Sorry, I have got a lot of tedious questions for you before I can even guess what might be the issue.

Do you mean one routing point in addition to the start and finish - so three points in total ?
(Yes..Start, waypoint, destination..)

What version of map did you use on ...

The trip is 1 hour 37 minutes. Only one waypoint.
This is the first time I've used the whole set up. It's been very difficult thus far.

Maybe a setting is incorrect on Zumo?

My Zumo XT "cannot calculate route" once transferred from Basecamp on Mac.
Help!!