I have not actually used it with a GPS.
I suggest the following:
- check for any GPS setup code in the setup() section
- try running it outdoors with clear view of the sky
- give it plenty of time to acquire that first signal
(once you get the first signal, subsequent times will be much faster. Also, keeping power to the GPS keeps its satellite library alive, which makes reconnection much faster.)
If that does not work, contact carloop support and see if they can help out.