Selling Selling Fortnite standard key for $20 steam wallet

Okay this is my first time in this forum and i hope the supervisors here can assist me with the rules of sale
I only have 2 standard fortnite keys and i selling them for $20 steam wallet
I suggest the buyers pm me with my steam account here http://steamcommunity.com/profiles/76561198047346492

Story why im here in playerup well i seen the bans in the forum by bans.. how does the ban works? Does the Ban ban your EpicGames Account and playerup Account?? is EpicGames related to playerup?? and also yesterday i got a buyer but the buyer just wont believe me and straight out assuming me that i try to scam him after i asking for the steam wallet code first plus the buyer also insist me to have a skype & discord account even i did try to proof this buyer with an email of my purchase of the game that is on 17 aug sadly in the end trade did not happen since the buyer could not given me the key first...piss of part buyer say that i have no balls or confidence...

And lastly is it ok to exchange for the steam wallet??