The following is not tax advice. Please clarify with a tax advisor your individual tax obligations.
In the settings tab in the app, there is a section called Taxes (check it is still Taxes). Here you will find the possibility to upload VAT ID’s that will be sent for verification. We validate your VAT ID automatically by using verified VAT ID validation services. Please make sure the correct VAT ID and business address is submitted to us via the app. In order to check this you can use the VAT number validation service from the European Commission here.