Soap dispenser won't open. Run the dishwasher on normal cycle with strong spray. (Dishes don't

Question

Run the dishwasher on normal cycle with strong spray. (Dishes don't come clean unless spray is strong.) Anyway, the soap dispenser did not open.Ran it several more times and it still did not open. I use the Cascade 2 in 1 Action Pacs so the dispenser is not overloaded. I ended washing the dishes by hand and I wasn't very happy about it. There are nine people here and that makes for quite a lot of dishes. The machine is only 15 months old. I shouldn't be having these problems.Thanks for any help.