Question for those that received referral supercharger miles with your new Tesla purchase: I purchased my MY in Oct 2020, and received 1k supercharger miles from a referral. When I shared my Tesla account with my wife, she is unable to see/use the referral miles in our Tesla app. Am I able to share the 1k supercharger referral miles with another driver? Or are they only available to me, the purchaser? TIA for the help.