My Xfinity stream does not match my X1 dvr

My Xfinity Stream recordings do not match my X1 recordings. They used to matchh but do not now for some reason.  Stream seems to have much less, perhaps only the most recent ones.  I've checked on the app and on the website.  I use the app to watch recordings away from home or in bed. How can I get them to match again?  I did change my cable package somewhat recently and it may have coincided with that but nothing was mentioned about Xfinity Stream's DVR changing.  What can I do to get these to match again?