Driving me crazy! Any way to turn off push notifications for "hub offline"?

[greg]

There is an issue where Hub offline notifications don’t work if you have contact book enabled.

Try enabling contact book?

My Contacts - is it back?

You can try the other way to enable it but this is of course not an officially supported way to do it. While logged into the ide go to https://graph.api.smartthings.com/account/list then click on your account Now in your browser address bar replace account/show with contact And then enter to go to this new address. Click the import users button and you should have contact book enabled now.