Thanks for visiting the community.
My apologies for the late response here. I know the feeling when you're having issues linking some services on the Google Home app. A few questions: when did the issue start? What service are you trying to link? What message are you getting when linking it? What device are you using to link the service (Android or iOS )? Have you tried using a different phone/tablet? Also, what are the troubleshooting steps that you've tried?
Looking forward to your response.
Due to inactivity, I'll go ahead and lock this thread in 24 hours. Feel free to start a new thread if you need assistance with your Google speakers and we'd be glad to assist you further.