If you have installed the FCPX Companion App a couple of times, this may have doubled up on your Frame.io Share Destinations. This guide will show you how to remove the extras.
In FCPX, go to File > Share > Add Destination.
Then, right-mouse click on the duplicate destinations and then click Delete. While you're here, you can also glance at the other destinations to ensure they have the right settings.
If you need to Add Destinations, you can follow those instructions here.