around midnight on Friday and Saturday and maybe other midnights too almost all electronic payment systems in Thailand failed even credit cards because the banks cannot handle the volumes.
I have is from a person who is building payment processing terminals...
Useless. I see no benefit. Every 10 times you try to use QR codes the bank doesn't respond or it's off or we do maintenance or it doesn't plane work anyway. I have bank accounts but even so.
So your cash always work.
If you need to pay your electricity bill you can just go to 7-Eleven and pay there been scan it and you pay them cash.
I lived in Thailand for 5 years and so far the digital services and the Colby at the Schultz sign up was all not working and basically a failure so....