Hello natalieschiller,
The error you are receiving might indicate that you are in a region where Apple Pay is not supported. The following information provides supported Apple Pay regions:
"Apple Pay is accepted anywhere you see these symbols and marks in stores, within apps, and on the web in Safari. You can add your credit, debit, or prepaid cards from participating banks and card issuers in these countries and regions:
Africa
South Africa
Learn about participating banks and card issuers in Africa.
Asia-Pacific
Australia
China mainland*
Hong Kong
Japan
Macao
Malaysia
New Zealand
Singapore
Taiwan
Learn about participating banks and card issuers in Asia-Pacific.
* In China mainland, you can use Apple Pay on the web in Safari only on compatible iPhone and iPad models using iOS 11.2 or later.
Europe
Armenia
Austria
Azerbaijan
Belarus
Belgium
Bulgaria
Croatia
Cyprus
Czech Republic
Denmark
Estonia
Faroe Islands
Finland
France
Georgia
Germany
Greece
Greenland
Guernsey
Hungary
Iceland
Ireland
Isle of Man
Italy
Kazakhstan
Jersey
Latvia
Liechtenstein
Lithuania
Luxembourg
Malta
Moldova
Monaco
Montenegro
Netherlands
Norway
Poland
Portugal
Romania
San Marino
Serbia
Slovakia
Slovenia
Spain
Sweden
Switzerland
Ukraine
United Kingdom
Vatican City
Learn about participating banks in Europe.
Latin America and the Caribbean
Argentina
Colombia
Costa Rica
Brazil
Mexico
Peru
Learn about participating banks in Latin America and the Caribbean.
Middle East
Bahrain
Israel
Jordan
Kuwait
Palestine
Qatar
Saudi Arabia
United Arab Emirates
Learn about participating banks in the Middle East.
North America
Canada
The United States
Learn about participating banks in North America.
Sending and receiving money with Apple Pay and the Apple Cash card are available only in the U.S. These services are provided by Green Dot Bank, member FDIC.
Apple Card is available only in the U.S. Apple Card is issued by Goldman Sachs Bank USA, Salt Lake City Branch."
Cheers.