Detergent Door will Not Open - Dishwasher

What type of detergent should I use? 

High-quality pre-measured tablets and packs are recommended for improved performance. 

Quality tablets and packs have been proven better than powder, liquid, or gel detergents at reducing filming on dishes. Using tablets and packs over time will start to reduce or eliminate white film. They are suitable for all water hardness and soil levels. Also, by using rinse aid, you can minimize the repeat buildup of the white film (not all packs and tablets contain rinse aid). Always place pre-measured detergents in the main compartment and close the lid. 

The Pre-Wash indicator on the dispenser lid is for customers who use powder or gel detergent and wish to add an amount of detergent to the Pre-Wash cycle. The volume of detergent added here is approximately eight cubic centimeters if filled full and level. Any detergent added here would be immediately added to the wash when the cycle starts versus detergent inside the dispenser, which is added during the main wash cycle. 

NOTE: Follow the instructions on the package when using other dishwasher detergent types.

• Use automatic dishwasher detergent only. Add detergent just before starting a cycle. 
• Fresh automatic dishwasher detergent results in better cleaning.
• Store the detergent in a tightly closed container and place it in a cool, dry place. 
• Extremely hard water mineral deposits (15 grains per U.S. gallon or more) can cause damage to your dishwasher and make it difficult to achieve good results. A water softener is recommended to avoid damage and achieve good results.