HTC has been working on the problem, having already reinstated some of the cancelled pre-orders and opened up their support channels to deal with other issues as well. As for those whose pre-orders remain cancelled, HTC has recommended those affected to contact their financial institutions to inform them of the charges. Having this problem so close to its official launch date may be costing HTC Vive some of its built-up pre-release hype.
The system requirements being pushed by SteamVR, and thus the HTC Vive, are quite lofty for most consumers. It calls for at least a Nvidia GeForce GTX 970 or an AMD Radeon R9 290, a fourth-generation Intel Core i5 or equivalent, more than 4GB RAM, and at least Windows 7 SP1. The HTC Vive itself uses connectors for HDMI 1.4, DisplayPort 1.2, and USB 2.0 or better that must be plugged all at once in order to work. However, compared to the Oculus Rift's need for one USB 2.0 and three USB 3.0 ports, it may seem more reasonable.