This reminds me of my Wise Junior card being rejected at Lidl and Farmfoods but worked everywhere else. There was no notification from Wise. Could just get a decline at terminal with no specific message.
I contacted Wise and they saw absolutely nothing on their end.
It later worked and still don’t know why it happened. I think it could be a merchant issue.
I’m trying hard not mentioning you posting your actual name… shudders Ok I failed.
So First Bus are sending you back. That’s a red flag and it leads me to think it’s their issue immediately. Then, looking back at your post, you said others work fine with NatWest and Lloyds and Monzo doesn’t ping.
Always trust your gut. The issue is Monzo. The fact First Bus have palmed you off is the only red flag you need. It can only be an issue with them. Their terminal must be rejecting it.
I wonder if anyone else on here uses buses and tried Monzo? Depending on where you live, I still remember them as ‘Thamesway’. The yellow and bruised plum coloured livery was a great combo!
I’m a bus driver and routinely see people using Monzo cards with no issue.
Payment failures are usually due to the bus operator blocking the card due to non-payment of a previous trip or the contactless threshold being reached.