Kef LS50W and SOtM

After continuing problems with Roon (Roon keeps losing control) and Kef LS50W (wifi and ethernet) I connected my SOtM Sms 200. A new problem has occurred. Everytime I shutdown the Kef’s, the next time I start them again I can’t see the SOtM in Roon… I have to reboot the SOtM again. Is there a way to solve this behaviour?