It seems that Xbox Smartglass is down for almost a week in the Netherlands for both Android as iOS. The message:
"Can't sign in to Xbox services. Please try again".
Reinstalling the app doesn't fix te problem. In the meanwhile the Play Store is filling with negative reviews with exact the same problem since last week. Also my friends with Iphones and HTC/Samsung smartphones are getting this error message.
When is this going to be fixed? =(