There is a current problem in syncing with seriesguide cloud
Can you please be more specific what your issue is? E.g. what are you trying to do? What do you expect to happen?
I receive this message also, is been happening for a week or two. Basically I mark a show as watched and I get the message there was an error synching to the cloud, please try again later. I can confirm when switching between tablet and phone that the changes are not synching. It happens on both devices.