I have been trying to sell a used MCM handbag on let it go which is authentic purchased by my mother in law who is now in memory care and will no longer use it. I priced it low as it is quite used and may need some repair as I had explained in the app. Not long after posting I was informed that it was removed due to lack of authenticity. I took pictures of its tag to demonstrate this and posted. What more can I do to prove authenticity? I do not have a bill of sale