Outlook

I continue to have problems with my Outlook on my MAC.  The outlook does not keep me signed in, randomly signing me out and I have now discovered that all of my 'folders' are missing.  The outlook folders where I drop and drag to keep organized.  Additionally I cannot recreate the folds.  This has been going on for awhile and I wish I had been more attentive to when it began if it was in the same range of time as any updates...it has been a stressful  year and this is unfortunately one issue I should have been more attentive to.