Altcoin Buy/Sell Plugin for WordPress

I need a simple plugin for wordpress for buying and selling altcoins (ie. BTC, LTC, etc). Plugin does not necessarily need to integrate with any service. It is a standalone plugin. The Plugin will use the coinpayments API to receive payments. See attached file for details. NB: You should be conversant with wordpress plugin development and coinpayment API before you bid. Only bid if you are ready to receive maximum amount stated in the file attached for the project. I'm not opened to negotiate above that so please don't bid if you will not accept the amount. Bid if you are ready to receive the full amount after the project. I can not make down payments please. All bids above maximum amount stated in file will not be read.