my 25 Months Old Whirlpool Freezer Very Suddenly Lost Ability To Vacuum Seal. Never Happened Before. I Opened The Door, Removed Item, Closed Door, And Heard The Sealing Process. 2 Minutes Later Opened Door Again, Closed Door Noting Some Effort Required, And No Sealing Sound…door Opened Even Though I Pushed Hard To Shut It. Removed Most Of The Contents To No Avail. Please Help Me. Thank You.