I am trying to upgrade to a higher plan from the existing free plan. I added my billing information successfully and trying to pay.
When I paid the bill, I received an email to confirm my payment. When I clicked the Confirm Payment button in the email, I get the following error, thus preventing me from upgrading.
Update: I got an additional message on the Klaviyo billing page as follows:
This payment requires additional user action before it can be completed successfully. Payment can be completed using the PaymentIntent associated with the invoice. For more details see: https://stripe.com/docs/billing/subscriptions/overview#requires-action
However, this page describes updates to the payment at the back end, which is not in my control.
Unfortunately this is due to subscription payment limitations set by the Reserve Bank of India (RBI). All in-app payments will fail if the issuing bank is an Indian bank. This is not a Klaviyo limitation specifically, but rather a restriction placed on subscription payments made by the RBI: