When the new card arrived, activated using the app, went to use it on the Tesco grocery website, transaction kept coming up failed and to contact Tesco Bank. Called through, was told that I needed to use it in an ATM before it will work (I didn't last time I had one, so sceptical on this advise), went to an ATM, checked the balance, back to Tesco grocery, same issue. Called through again, got to the same person, who said everything is fine, but will reset the token and within seconds tried the transaction and it went through - success!
Everything has been fine for a couple of weeks, and then last night the same issue again. Left it overnight and tried again this morning and still the same, called through, spoke to someone who said it was Tesco grocery issue, explained it's not, he rest the token and it worked straight away.
10 minutes, went to update a delivery on Tesco grocery, it wants to re-authenticate the transaction and back to the same issue, so it looks like another call to Tesco Bank 😩