This posher makes me an offer than cancels weeks later

I’m really not sure what happened. All I know is that the seller makes me an offer and then when I accept it weeks later, she cancels and gives me no explanation.. I thought maybe it was just lost in the mail because a lot of times tracking numbers do not update. And a lot of my packages were late. But then I realized after weeks of waiting, she canceled for no reason and did not give me any explanation. She could be a scammer so beware.! If she’s not, this is certainly bad business! I’m a grandmother raising four grandkids and a lot of times I depend on posh for Christmas and birthdays, and just buying things for my grandkids! I at least deserve an explanation or a heads up after waiting weeks for these items!