Hi BrettJo_3046957
Thank you for reaching out to our SMARTY community forum!
If you bought the SIM from a store/supermarket you need to enter the SIM ICCID into the SMARTY website to choose a plan and activate the SIM!
If you ordered a SIM online and the SIM was delivered to your home address, you do not need to make any other payments, you should just be able to enter the SIM into your device and activate it.
Please clarify if your SIM was delivered or purchased from a store so I can assist with your enquiry!
- Jodie