MELCloud Integration Fails to connect with Accounts Created via New "MELCloud Home" App

[MHultman]

The problem

The Home Assistant MELCloud integration is failing to authenticate accounts were created using the new "MELCloud Home" mobile application. Attempts to configure the integration with credentials from these newer accounts result in authentication errors.

Once a system is registered with the new "MELCloud Home" app, you are unable to re-register or use that system with the older MELCloud app, effectively locking them out of Home Assistant integration if they started with the new app.

What version of Home Assistant Core has the issue?

core-2025.5.1

What was the last working version of Home Assistant Core?

No response

What type of installation are you running?

Home Assistant OS

Integration causing the issue

melcloud

Link to integration documentation on our website

https://www.home-assistant.io/integrations/melcloud/

Diagnostics information

No response

Example YAML snippet

Anything in the logs that might be useful for us?

Additional information

No response

[home-assistant]

Hey there @erwindouna, mind taking a look at this issue as it has been labeled with an integration (melcloud) you are listed as a code owner for? Thanks!

Code owner commands

Code owners of melcloud can trigger bot actions by commenting:

• @home-assistant close Closes the issue.
• @home-assistant rename Awesome new title Renames the issue.
• @home-assistant reopen Reopen the issue.
• @home-assistant unassign melcloud Removes the current integration label and assignees on the issue, add the integration domain after the command.
• @home-assistant add-label needs-more-information Add a label (needs-more-information, problem in dependency, problem in custom component) to the issue.
• @home-assistant remove-label needs-more-information Remove a label (needs-more-information, problem in dependency, problem in custom component) on the issue.

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