Hi
Is anyone else having an MQTT Validation Error after updating to the latest iOS version of the Handy App.
I have 2 x P1S both on latest firmware and I have updated my iPhone and iPad and both show the same error.
I have deleted the app and reinstalled but the same issue.
Studio is on latest version and it is working perfectly.
Peter
Yes. Having the same issue after upgrading Handy. 
Also on android I have same situation
It’s the same on iPadOS — though curiously, I only see this behavior on my X1 Carbon. Perhaps it’s just a coincidence… or maybe it’s the printer’s gentle way of hinting it’s time for retirement?
Same issue. Firmware is latest version and handy app is updated too on ios.
Same for me thought my new p1s printer was bricked been great for a week then this am mqtt no matter what I did, then saw app updated at one in the morning.
We apologize for this issue
The team is currently working on identifying the reason for this problem, to patch it in the shortest time possible.
I recently purchased my P1S and used OctoPod with my old printer before. This entire MQTT validation nonsense is really a pain! Any explanation or valid reason for it other than „protecting“ your printer from 3rd party software?
it seems that you don‘t understand the impact neither the security really necessary to make it user friendly!
I am getting this problem with the latest version of Bambu Handy, the latest Bambu Studio and the Latest firmware on the X1C.
Basically the X1C is only printing if you interact with the panel on the front of the printer now. I have tried downgrading the firmware by a couple of version and then I get other problems.
On the other hand both of my P1S printers are fine and working on a slightly older firmware revision.
Is there any value in trying the beta version of bambu studio to see if it fixes the issues?
A hotfix has been sent for approval to the appstores.
It should become available soon, to update and solve the problem.
It was found that it only affected some mobile phones.
We appreciate everyone’s patience until the update is available to apply.
I also have the same error after the update and am unable to print anything 
I have the same issues after power cycling, checking app versions, and re-binsing. Bambu Studio is throwing errors when trying to print telling me it can’t resolve a domain name, and I’m getting MQTT errors on Bambu Handy on android. The only way I got a print was to tell Bambu Studio to save the file to local storage, send it, then start the print from the control panel.
How long does it take the app to update?
I’m away from my farm and crying.
Update hit the iOS app stores (updated from the german app store couple of min ago), issue seems to be resolved.
You may need to manually refresh the Appstore for updates, as automatic updates usually take longer to be distributed.
Definitely. You should dispose of it responsibly. I’ll send you my shipping address so you can be confident it is done safely. Glad to help! 
Looks like they pushed an update out a few hours ago:
(Also it might just be an illusion but I swear the update has made the app get updates from the printer faster.)
Less than a minute for me. Should be quick.
Just updated the App on IOS and still have the same error sometimes, not all the time but sometimes…
I have updated and whilst the MQTT error has gone away, now I get an error saying more than two sessions are active.
Problem with that is that even my H2D got MQTT validation errors 
The update does not work properly, now getting Invalid Certificate error when trying to connect along with the error about more than 2 devices.
You will need to look further at the problem.
Peter
