That’s a fair point - I have already fed this back 
I’d hope it’s fairly clear from the above that it’s not us blocking people from making transactions at Asda. That said, I think it’s more helpful to stay away from rumour and speculation until we do have more specific details to share (I have asked what we can do here) 
Did anyone on here pay for fuel at Asda with a different card after their Monzo card was declined?
Just interested to know if Asda were changing their system to authorise £99 initially and accidentally broke Monzo functionality.
Working for a legacy bank who recently had issues with payments, this is exactly what happened with us. Once we put a communication out about the issue, customer contact from phone, web chat, social media etc. went through the roof. Most of these just wanted to talk about what was happening and weren’t impacted by the issue. But as wait times then became unmanageable the people who it did impact couldn’t get through to discuss it.
Just to confirm there are no issues with Asda online grocery ordering either using a Monzo card, in case anyone was wondering
Thank you for your reply 
I still think there should be better communication from Monzos end but now I’ve calmed down, I can see it from your perspective a little better.
I hope you’re close to resolving this.
I was also thinking, if Asda have blocked Monzo either deliberately or accidentally is that against any Mastercard T&Cs or any laws? Could Monzo be in a position to claim a huge amount of compensation? 
Yep I used a second card to pay for the petrol, this is why you should have a backup card in your wallet.
If I didn’t have a second card on me I would have got cash out, not sure how that would work as I used a pay at pump.
What Asda could do is inform customers paying with Monzo at checkout that they won’t be able to use it for fuel, could also have something by the petrol station saying the same thing.
I’ve only ever seen the Asda’s that have Pay at pump only and don’t have store for you to go in any pay so I can imagine it’s somewhat inconvenient
Happening in Telford too, so seems to be a widespread issue
I’ve been told that they have blocked Monzo all together until further notice.
As far as we’ve established, ASDA have blocked our card number range at the terminal for all fuel purchases as of Thursday morning.
We do not yet know why they have done this but we do know that we are not the only card issuer affected.
In-store purchases are not affected.
It took a long time for us to work out what was going on and I apologise for the lack of clear communication. These issues are incredibly difficult to establish the facts on and I’d like to thank everybody here on the community and in-app support chat who posted receipts and reports as they were incredibly helpful in narrowing down what was happening.
We’re working to resolve this and are waiting for responses from ASDA, their card payments provider, and Mastercard. As it’s not something under our control, there is very little we are able to do but we will continue to push to get this resolved as soon as possible.
For now, our Apple Pay and Google Pay cards seem to still work for fuel payments at ASDA and all of our cards continue to work as normal at other fuel stations.
Thanks for the update, particularly on a Sunday too 
Would it be possible for those who attempt to use the card, have a follow up notification, plus link to status updates?
The transaction doesn’t go through at all apparently, so I’m assuming that would not be possible as Monzo won’t have sight of it.
It would unfortunately not be possible, the decline happens before the terminal attempts to connect out to us.
This is part of the reason it took so long to investigate.
Ah that makes sense!
Hopefully Asda gets their act together else it’s going to be a lot of back and to with support on either side!
Cheers
Thanks for the update, Rika, really appreciate it!
With regards to the above, does anyone know if the kiosk at ASDA accepts Apple/Google Pay above £30?
The whole thing is kind of ridiculous and I suspect there will be a valid reason why - they must have lost money
The one I went to didn’t. I asked before having to go to the cash machine
I had my card refused at the pay at pump petrol today, oddly enough the card worked fine inside asda at the self service till
I wonder if Barclays is one? May be to do with people freezing their cards after the pre-auth so the money can’t actually be taken?
Edit: actually I suppose that wouldn’t work unless the car was stolen
It’s not that as Starling is reportedly working fine and you have the ability to freeze that too.
I suspect that they have had a disproportionate amount of fraudulent transactions using Monzo cards, so have taken the steps they have. That’s just my current thinking based on the information available, I may be completely wrong.