I wouldn't mind COD only! Is it possible to set that as default on my Shopee account?
I don't use a bank account for online purchases. I use a Kasikorn Bank "Shopping card". It's "virtual", not a real piece of plastic - they sent me the card details (it's a VISA number) and it works on Lazada and AliExpress. The card has just a few thousand baht in it, so I'm not too worried about being hacked.
I've used it in the past on Shopee, but always on my Windows 10 PC at the Shopee website, so I don't know why it has stopped working now. Here's the screen displayed while I'm waiting for the OTP on my phone. There's nothing personally identifiable there (I blacked out the card no.):
It may be just this store that has a problem. I'll try buying other stuff to see if the card works elsewhere on Shopee.
If not, I'll try to set up COD as default, or I'll have to pay a visit to the bank.