VISA MASTERCARD UNIONPAY MIR GooglePay ApplePay Acquiring for Ecommerce. CONNECTUM is an Authorized Payment Institution, founded in the United Kingdom and regulated by the Financial Conduct Authority since 2014. UK FCA registration No. 624117. Principal Acquirer Membership in: VISA, Mastercard, MIR payment systems, an Acquiring Only Principal Membership in UnionPay for SEPA region. CONNECTUM offers a powerful payment processing system for various EEA companies working in E-commerce. Stable secure Internet banking and payment gateway help merchants easily accept multiple payments from customers worldwide. We keep decent rates for our services thanks to our direct connections to the largest payment providers.