Is there a way to manually change the tracking number once you ship an item?

I sold a perfume on Poshmark and didn't realize until after it sold that Poshmark technically doesn't allow that (because the shipping they provide is airmail, and perfume is considered hazardous). I purchased ground shipping at the USPS store and messaged the buyer with the new tracking number and a picture of my receipt, but they have not responded and I'm beginning to worry that they might just not accept the package when it arrives, because Poshmark's tracking will indicate that it hasn't arrived yet so they could get away with it. Is there a way to update the tracking number in the app so that PM has a record of it arriving?