This is currently being shown on the user and checkout pages. Once we find a better solution, the message will be removed:
Fill PDF Service is registered in Norway, and as such will soon be required to collect Merverdiavgift (moms/VAT/MVA) according to Norwegian law. This will happen within the next few months.
If, at that time, our system is not yet set up to handle this, so if you are in Norway, you will receive a separate invoice for the amount. MVA is 25% of the price, and it will be invoiced in NOK.