Mco home mh-dt311 dimmer switch

Hello everyone
I bought 9 mco home mh-dt311, they are z wave and installed the first one by the instructions, and the lights turn on but never off pressing the touch switch. Trying to add it to the hub ( z wave compatible) but it doesn’t detect them. Look like I can’t put them on the add/remove mode which does not explain on the instructions how to do it.
Would be much appreciated if could get some help.
Thank you