I have read the rules over and over, and still do not understand the resolution procedure. What to do when you do not reach your Objective. do you just keep rolling encounters and resolution rolls until you find your objective? Do you move on to another devle? Are you suppose to keep exploring areas beyond the Delve Site?

That’s right, if you don’t reach your Objective, you keep rolling encounters until you eventually locate your Objective or reach 4 setbacks (at which point the delve fails).