Has anyone had any luck using a US credit card to buy bus fare using the Straeto app (soon to be replaced by the Klappio app on July 1, 2023) for bus travel in Reykjavik? I'm getting ready for a trip next week and downloaded the app, but discovered that I got error messages every time I tried to enter US credit card information. The Iceland Klapp transit website FAQ says that foreign credit cards need something called "3D Secure" validation, which none of my several credit cards seem to have. I guess that my only alternative is to buy a bus card in a local store, but using the app and not needing to prepay for trips I may not take seems to make so much more sense.
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