Putting blade back on my Andis dog clipper

Question

I was trimming my dog and a mat in his fur pulled the clipper blade off the clipper. I have instructions that are very simple and I've tried many times to figure it out. They are suppose to snap back on and I can not get them to snap on or stay on in any way. Are you familiar with the Andis Ultra Edge special edition dog clippers and the way the blades snap back on?