If you can only manage one of these, you only see that part of the page.
Legal details
The business as it is registered with the tax authority. Some countries block the first invoice until this is saved. See Rules for your country.
The address search only suggests addresses in your registered country, and picking one never changes the country.
Fiscal profile
Where is your business based? starts from the address you entered at signup. Once Jomioz Payments is active, country and currency for card payments are locked to that payments account.
In Spain the tax region comes from the registered address. Override it only for Ceuta and Melilla or the Basque Country. Names for tax, withholding, and regional rates are in Rules for your country.
