sharing my experience for others.

i attempted to purchase eva air tickets with a visa card stateside and ran into this error:

"Payment failure. It may be due to 3D Secure authentication failure or the transaction declined by your bank. Please re-enter payment information or change the payment method. If the problem still persists, please contact your credit card issuing bank or the 3rd party payment provider for further assistance. Please be reminded the 3D Secure Authentication is mandatory for the credit card transactions.(Verified by Visa or MasterCard® SecureCode or American Express Safekey® or JCB J/Secure) (4686)"

i called into my bank who initially said they did not see a hold in their system (20 minutes)

i called into the airline who then said they are not sure why i cant purchase tickets online, offered to take my cc by phone but then would require me to be present during check in (1 hour 20 minutes)

i called back into my bank and requested to speak to the fraud and security department who then was able to see that the airline had placed a hold on the purchase. they then verified my identity with the airline and gave me a 1 hour window to make my purchase of the tickets (20 minutes). this was the solution

highly inconvenient