Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
Id check monoprice out first, they have some 15ft USB 2.0 A to A Male/Female Extension Cables that you can keep extending or just run of the mill 15ft usb cables
doing a quick search didn't find anything in the 30ft range though, what do you need a 30ft usb cable for if you don't mind me asking?