NOBU not backing up

Been using NOBU for several months w/o problems and now it doesn't seem to want to automatically back up the 2 pcs I have registered. When first noticed it had been over a week since the last backup. I can login and select the Backup Now and it does the backup. I don't see any 'problems' on the Settings area. Both pcs are on daily.

 

I'm using W7 64 bit and IE8.