You bought it from a third party, but unless you can prove that the chain of custody never included tesla after the first owner, you might be SOL.
Also, this is tesla's current verbiage on their website for premium connectivity. That Asterisk of *used cars ordered on or after jan 9th are eligible for a subscription., is a bit vague. Ordered from tesla?
It also includes this blurb:
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How are used Tesla cars affected by this policy?
All used Tesla cars purchased on or before January 8, 2020 will continue to have the Premium Connectivity features described above at no cost for the lifetime of the car, and will be active for future owners if sold privately.
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I think you would be within your rights to ask "WHY is my premium connectivity being changed to a for cost option on this 2017 model 3 I bought private party?" I think you should be entitled to the answer as to why they are doing that, with something other than "nothing I can do". Something like " this vehicle was turned into tesla and tesla sold at auction, so is no longer eligible for free premium connectivity". They owe you an explanation at least in my opinion.
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