Probably already know the awnser, but as an homey newby any updates or someone working on this ? happy to help with testing if this helps unfortunately no development skills here.. 
found something!
A test version (v1.10) is available here:
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I’ve been experimenting with getting Watts+ Vision running on Homey, building on the existing Home Assistant plugin, a bit of help from Claude, some of my own coding, and a fair amount of trial and error.
This is not an official release or anything polished. It’s simply something that works for me right now.
The app is based on the ideas and code from the Home Assistant integration, adapted to fit the Homey environment. Nothing groundbreaking, just practical engineering and iteration.
I’m not promising anything yet. I want to give it a couple of days to properly test and validate stability before sharing it more broadly on GitHub.
A test version (v1.10) is available here:
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Goodmorning @idleprocess_zero
Thank you for helping out this community and using your programming experience and a little help of HA and Claude to get an app like this, really amazing!!
I opened the app once it was installed and unfortunately I get a black screen, both on mobile and on the web app….
I tried clicking the blue continue button, but than the screen gets completely black. Is there something I have to do before?
Maybe you can help me (us) out
Thank you 
@M_P73 Thank you for sharing!
Hi
Sorry you are correct, the latest version had a custom HTML and I did not notice this was not showing correctly, reverted to the older setup in 1.1.1
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On the list for future updates, let me know if there are others that might be useful as well
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Temperature dropped below X°C
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Temperature rose above X°C
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Target temperature changed
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Boost started
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Boost ended
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Device error cleared
3 new Actions:
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Set ALL thermostats to Reduced/ECO single tap when leaving home
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Set ALL thermostats to Anti-freeze for long absence/holiday
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Set ALL thermostats to Auto/Schedule when arriving home
Awesome, thank you!! 
Looks good now, I’m able to log in into the app, although I can only find 1 thermostat, while I have 4 in total. See below screenshot. Is there anything I can do for you to troubleshoot?
On the first attempt I , by mistake, logged in with my old watts Vision account (prior to Vision+) and that one gave me the living room Thermostat.
The 2nd attempt was the new one with my current Vision+ login credentials.
Should I send you a diagnostic report or so?
Nice!
Borssie
I have a debug version, 1.3 i think it is not yet as ready as the 1.1 version
Just uploaded for you to test is the other thermostats pop up or not. Next version will have a export log button to aid the development if i can make it work
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Great! Just let me know if there is something I can do for you for testing 
First of all thank you for all your effort, really appreciate it. Tell me how I can send you a coffee
The error i’m getting now is this
Using 1.3.0 version of the app:
The credentials i’m providing are the exact same as the native Vision+ app on my phone
I made a diagnostic report if that could help you identify what is causing this.
19c05a31-81f7-42d6-aa6e-64e02ca2988e
Please advise if there is something else I have to try
Thanks Borssie,
Have added the 1.3.3 test version - with diagnostic log
Diagnostic Log — go to Homey app → Apps → Watts Vision+ → gear icon 
. Shows a live rolling log of the last 100 entries across all devices: errors, commands, poll results, mode changes. Tap “Copy to clipboard” and paste into a support message. All personal data (email, MAC, device IDs) automatically redacted before display.
So I have one question, I still get the error while trying to log-in that my credentials are wrong.
I went to the website your’re stating:
According to my infomation, this is the “old” Wattsvison app which I’m not using anymore. Is It correct I still have to log in with the credentials of the “old” app?
Here is’s saying the Watts Vision+ login, which should be correct for this Homey app right?
Yeah this portal I am using for login, can you try and login with your details on that web portal and see if that work? If it does not we know why it isn’t working for you.
I do not think i am aware of a new portal or login, can you share ?
Hi @idleprocess_zero ,
Sure!
This is the login for my app. I’m using the Vision+ application and not the “old” Watts Vision app (white with blue W)
This makes sense, I am still on the old HW CT-02-RF so have not been exposed to the new one.
Let me see if i can make a version for the new as well then, just might need to be the tester 
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I see, since you’re also using Vision+ in the name of the Homey App, it caused confusion from my side too.
Yes please, if you’re able to help me in that, I will be your tester for sure! 
will switch to mail for quicker comms if you are ok?
Idea:
BT-CT02 (old)
BT-CT03 (new)
The plan: two separate Homey drivers in one app
com.watts.vision/
drivers/
watts-thermostat/ ← existing (BT-CT02, old API)
watts-thermostat-v2/ ← new (BT-CT03, new B2C API)
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