I input correct credit card information, but the system says it is invalid.

Our credit card system is very strict due to the large amount of fraudulent signups we receive daily. Unfortunately, this sometimes results in problems for legitimate users! We can check what the problem is if you send us a scan of your credit card to supportus@gmocloud.com. There is no need to show the full number - we just need the last 4 digits and your full name.  

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