What everyone else said. "You're doing it wrong."
I found some refill adhesive I bought at Michaels were not good. The roll wasn't wound tightly, and didn't work nicely.
There definitely is a technique for using the trigger and releasing. Takes a little practice. It does NOT work like a typical adhesive tape.
And ditto what aquabunny said. PUT down the glue sticks!! NOT worth your time. They WILL fail!!! And, I'd never use hot glue in my scrapbooks.