I was responding to an ad not placing one

not for first time
my inbox shows nothing sent or received

I try to post message for items for sale but never find a response and my inbox never shows any messages sent. How do people sell anything if messages can't be sent or received?

I am renting. Looking for cheap styrofoam insulation come in 3-5cm sheets.

Not here long term. Renting. Looking for insulation styrofoam. Can't post link from taobao but I used it in Nanjing.

Would like to insulate a room so I won't freeze my ass off in the "spring city's" winter. Where to buy? Found some on taobao but can't post link. Would like to buy locally.