Payment Gateway Supported Countries
Stripe 20+ supported countries
Square USA, Canada, Australia, UK and Japan
PayPal Checkout  200+ supported countries
Authorize.Net Accept Hosted USA, Canada and UK
First Data Global Gateway e4 140+ supported countries
Payeezy USA and EU
2Checkout 200+ supported countries
Afterpay Australia, New Zealand, USA, Canada
American Express USA, UK, France, Germany, Mexico and Australia
ArsenalPay Russian Federation
Authipay Payment Gateway UK and Ireland
Bambora Online Checkout Sweden, Norway, Denmark, Finland
Bambora North America (Hosted Payment Form) USA and Canada
BitPay 200+ supported countries
CC Avenue India
Chase Integrated Payments Powered by WePay  USA, Canada and UK
Clearpay United Kingdom
Clover USA
CoinPayments 180+ supported countries
Datatrans Payment Switzerland
eWAY Rapid Australia and New Zealand
giropay Germany 
Hesabe Kuwait
iDEAL (via Mollie) Netherlands
IntellectMoney Russian Federation
Instamojo India
iPay88 Southeast Asia (including Malaysia, Philippines, Thailand, Indonesia, Vietnam, Singapore and a few others)
iPay88 Philippines Philippines
iPayment Germany
Klarna Austria, Denmark, Finland, Germany, The Netherlands, Norway, Sweden, the United Kingdom, and the USA.
Lemon Way EU
Mercado Pago Argentina, Brazil, Chile, Colombia, Mexico, Venezuela, Peru and Uruguay
Mollie EU
Moneris eSELECTplus (Hosted Paypage) Canada
MultiSafepay (iDEAL, credit cards, Giropay, DIRECTebanking, etc) EU
Netcash South Africa
Network Merchants USA, Canada and UK Russian Federation
PagSeguro UOL Brazil
PayFast South Africa
PayAnyWay Russian Federation
PayJunction USA
PayKeeper Russian Federation
PayLeap USA and Canada
PayOnline Russian Federation
PayPal Payflow Link USA, Canada, Australia, New Zealand, and UK
PayPal Payments Advanced USA, Canada
PayPal Payments Pro Hosted UK, Australia, and Italy
PayPal Plus 200+ supported countries
Paystack Nigeria
PayTM India
PayU Money India
PayUbiz India
PayU Latam Argentina, Brazil, Chile, Colombia, Mexico, Panama and Peru
PayU Russia Russian Federation
Pin Payments Australia
PostFinance Payment Switzerland
Rave by Flutterwave USA, Nigeria, Kenya, Ghana and South Africa
Razorpay India
Realex Payments/Global Iris 50+ supported countries
Redsys Spain
Robokassa (Webmoney, YooMoney, etc) Russian Federation
SafexPay India
Sagepay UK
Sberbank Russian Federation
Sepa EU
Sofort Austria, Belgium, Germany, Italy, The Netherlands, Spain
Tinkoff Payments Russian Federation Poland
Virtual Cart Services South Africa
WalletOne Russian Federation
Worldpay Business Gateway UK, Ireland
Worldpay Online Payments UK, Ireland
YooKassa Russian Federation
Zapper USA, UK, EU, Australia and South Africa

Once set up, the payment method powered by the chosen payment processor will appear at your store checkout and your customers will be able to choose it as their payment option.