I needed a shorter one to keep from hitting the garage door. I cut the factory one off so I had about 1/2 inch clearance. Took the little ball off the end and drilled it out a little bit larger and glued it back on.
Mine looks like that after I turned off everything in the privacy settings. Go to the privacy settings and make sure everything is turned on. The insurance one doesn't have to be on though.
If you turned off the data sharing, it will not work anymore. It uses the cell connection unlike the old XM system. I liked the old system better in my 2017.