If you are a EU country and you don't provide a valid VAT number we will charge 21% VAT. If you want to avoid paying VAT you have to specify a valid VAT number.
You can change or add your VAT number from Billing > Billing Information:
Attention: VAT number has to start with the county code + digits
For example :
- BE - Belgium : BE0000000000
- GB - United Kingdom GB000000000
- FR - France FR000000000