Why is the delivery taking so long?
K8 should be digital delivery and pretty much immediate. Is there a serial number showing in your account? If not you should contact support here - https://support.native-instruments.com/hc/en-us/sections/360000092537
Please contact N.I. Purchase Support
In case that you need guidance contacting support : Please read : how to get support !
@Jeremy_NI , do you have anything that you want to add ?
Nothing to add, @Colin Burton should definitely contact our support to know what's up with his order.