VAT registration changes

Hi

I am not able to change my VAT registration status from Yes, but not registered for EU transactions to Yes. From any reason I am getting permanently an error message "This VAT number is invalid" what is not true as I have a proper record in VIES database (https://ec.europa.eu/taxation_customs/vies/?locale=en)

Question is - how change VAT status in Booking?

Thanks

Jacek