Raddus LightSpeed Bundle Disappearing from the Shop when Clicking Purchase

I am trying to buy the Raddus Light Speed bundle, but every time I try to purchase it, it disappears for a while before reappearing much later with the same issue. On the webstore, it says "Oops, something went wrong," and on mobile and the PC client, it disappears without any pop-up. I tested the other light speed bundles by clicking purchase, and they allow me to continue with the payment method. This is leading me to believe it is a problem with this bundle. This is quite frustrating. 

I have never purchased it, nor have I been gifted it. I have tried on multiple devices and refreshed my cache to no avail. I would preferably like to purchase it on the webstore if possible for the Coaxium. Thanks