Not sure what you mean by that and don’t know the reason. But if you mean that they aren’t shown in your Music Services list or not listed when you try to add a service then I’d try re-editing and saving the address in the Sonos web profile - even if the address looks to be in a country where those services should be available. 

Then you may have to wait around 24 hours for them to re-appear. That has worked in the past.

Someone also wrote that checking for updates in System Settings > Manage > System Updates in the app would refresh the list.