I DID IT! Lost package initially denied shipping protection as seller

Hi guys! Just wanted to say I sold an item through Mercari's standard envelope prelabel. I only got a tracking update the day I shipped it out and there have been no updates since. Finally, after 30 days, the buyer put in a request for lost package. I read horror stories here about how Mercari's shipping protection is terrible and people wouldn't get reimburse and would be out a lot of money and sure enough, I got denied reimbursement as a seller. They claimed it was due to incorrect weight. I put in an appeal through their help center to which they said I'm ineligible for reimbursement due to it not even qualifying as a standard envelope. However, it was a small print that clearly fits the definition. At this point, they were making excuses to not reimburse me. I stood my ground and after a lot of back and forth, I finally am getting reimbursed! Just wanted to put this out there for people going through a similar situation. Do not be discouraged and keep spamming them until they get tired and give in!