You can edit your billing details and VAT number from your dashboard here:
What is a VAT number?
As a European company registered in Estonia, we must charge VAT MOSS (Value Added Tax - Mini One Stop Shop) for all sales to clients within the European Economic Area ( EEA ).
A VAT number is an ID given to businesses within the European Union that pay VAT. Businesses with a VAT number won't be charged tax on digital sales to customers in the European Union.
Follow the steps below to edit your billing details and VAT number:
1) Log in to your dashboard.
You can reset your password or contact support if you have trouble logging in.
2) Click on your name in the top right-hand corner of the screen. Then click on Account & Billing Details.
3) Change your name, billing address, and VAT number in the popup. Then click Update Details.
That's it. Now all your invoices will include your new billing details and VAT number.