The SIM card identification number is located on the back of the SIM card and is made up of 20 digits. It is above the barcode and starts with 894101/894102. We need the last 14 digits.
If the SIM number is not accepted during registration, please check that you have entered the numbers correctly and that it is indeed a Digital Republic SIM card.
You can also find the SIM card number in your customer portal.