Hi, this is my first post in the Homey community. I moved from Smartthings to Hubitat as ST removed support for Webcore but as I had so much problems with Hubitat I thought I throw money at the problem and try Homey! So far it has been an interesting journey! However, the problem is that most of my Z-Wave wall switches is of the brand Qubino hence I’m looking in this thread as my dimmers are turning on at full level. I reached out to Qubino and they have the solution for this problem but they don’t have time to implement it (I will post the solution below). How do I get Homey technicians to update the device handler (app)??
Answer from Qubino:
Thank you very much for reaching out to us,
I think you’re talking of the button in the app. The issue with that is the command the button is sending. It is true that the app is not more developed by the Homey but until the last few releases the app was build from Homey developers and they choose to use the SWITCH_BINARY_SET command. this command as its name is telling is binary so with it is possible only to send 0 or full command. They should use the SWITCH_MULTILEVEL_SET value FF and SWITCH_MULTILEVEL_SET 00. This command set the light to 0 and the last non 0 value. Like this you would be able to set the full only on the slider and the button will be used to switch the light between the 0 and the last value that was set before the light was turned on.
Right now the Homey Qubino app is on hold, that’s because all of our developers are busy to program the new series 800 devices. As you may know already our company was bought by the Allterco (Shelly) company and now we are developing all of their WiFi devices on the Z-Wave.
First ones coming out very soon 
I can give you the raw commands that you can use to send the dimmer to the desired value, the below is the send the mini dimmer to the last non 0 value:
0x26, 0x01, 0xFF, 0x00
0x26, 0x01, 0x00, 0x00 set dimer to 0 instantly (change the last two 00 if you want it to go slower)
0x26, 0x01, 0x63, 0x00 set dimer to full instantly (change the last two 00 if you want it to go slower)
Any value from 00 to 63 (marked bold above) in hexadecimal is a percentage of the dimming so with this command you can set any value (percentage) of dimming.
NOTE: one more trick if you modify the last 00 to another value you can set the time that the dimmer will need to go to that value
I hope I was able to help you, if you have any additional questions please don’t hesitate to ask.
Best regards,
Igor, Technical support
Qubino by Goap
I hope someone can fix this or I need to spend more money to buy new switches.