Z wave device keeps on disappearing - help!

[jkp]

brand/model of the device?

you may want to start using the following instead of IDE: https://community.smartthings.com/t/smartthings-api-browser-now-available-to-all/249907

have you reported the issue to ST support?

Life after the IDE: Questions and Answers

With the transition to the new architecture, the IDE is in the process of being discontinued. Some features are already gone. Any device using new architecture, such as those using edge drivers, will just show up as “placeholder“ and the information will be incomplete or even inaccurate. (For example, it will probably say that all devices showing “placeholder“ are in the cloud, where in fact all edge drivers run local.) Don’t try to use the IDE to change anything that says placeholder: you might even break the integration altogether. http://my.smartthings.com is the new official webpage access to your smartthings account. At first that page was pretty limited, but as of 29 June 2023 Samsung has now added a number of new “advanced” features to that page, making it much more like the old …