@Mariano_Colmenarejo I have found one issue that is not making bulbs non functional, but device details gets stuck for some time (10-20 seconds). It’s related with Temperature range - bulb capability, that will be different with different models.
Your device allow temperature range from 2000K to 6500K, and Ecismart bulbs are capable of 2700K to 6500K. If move slider below 2700K, it gets stuck for some time. If i hit predefined temperature button for lowest Temperature, in this case some how selects 2450K, it gets stuck for some time. See bellow
This is probably chosen by app, by percentage of driver. If you can somehow query Temperature capabilities of light bulbs or have settings that will alow to set range, that would solve this issue.
Bulbs always go to minimum range, hiwever thise preset buttons are not all useful.
This one is from Groovy dth