I need a payment gateway set up ASAP MUST KNOW PHP it is a Linux Based Server Arvixe

I have a fetish/adult website that need Zombaio implemented. I did everything I could including manually step BY STEP instructions through the FTP. It is Social Engine 4. I keep getting an error message when I try to add the key. It is in test mode and test key has been accepted however, it still comes back error. I did the HTML and pout it on my site. E-mail me if you are interested. This is a quick job and should not take long IF you are fluent and familiar with Linux. Unix, PHP, Social Engine and their add on's and Zombaio. I need this job done ASAP, I will also TIP if done in a hurry but accurately. Thank You