If Royal Mail Track & Trace states the following message:
The system is currently unable to confirm the status of your item with reference KS....GB
This simply means a delivery has not yet been attempted to your residence but your tickets are on the way and there's still ample time for them to arrive.
We ask that you please allow the maximum time for your tickets to arrive before contacting us as it is preferable for you to have your physical tickets in your hands before heading to the event.
If for whatever reason your tickets haven't been delivered the day before you're due to attend the event then we'll be more than happy to look into this further for you.