Alright I'll help out. Been using Amz for a while.
So what happens is either one of the two things triggers that kind of response from amazon.
#1 - If a customer complains or even thinks an item is false, boom lockdown!
#2 - If a owner of that brand says hey I don't authorize anyone to sell my products to amazon and reports other seller's listings with their brand names... you guessed it verification time on amazon's part so they don't get sued.
#3 - Is if amazon itself suspects that the product is false or inauthentic.
Best way to avoid this .. find a supplier and get an authorization letter authorizing you to sell and build a strong relationship with them. Otherwise I am sorry to say but you will keep running into the same problems.
If you did by from either direct or an authrized reseller of the product. Ebay, target, walmart, etc. you get the point, then it's easy just upload the receipts and they will unblock your account.
Your welcome, I learned the hard way through years and trial by fire my friend.
PM me if you need some help.