my account Suspended help

i am the seller on the gameflip. my shop is AngelShop
last month. i have sell some steam code …but i dont know the gameflip is not allow to sell it. and i sell some … one day . my accout is suspended…
i am sad. please help me.
i have 800+ rate for csgo keys or item or rocket leauage item. and it have 250$ in my account .
i am very sorry to sell the steam code .
i will never sell the steam code again.
please activative my account…
thanks
thanks
thanks

You should read rules before selling