Product review (4 stars): I few sentences of replacement instructions or a YouTube video reference would have been useful.
It should have probably come with some hints on how to release the clips on the old dispenser.  I was fortunate enough to stumble across a YouTube video that mentioned using dimes to hold each clip open as you open them one at a time with a flat-blade screwdriver.  Also, having a 5.5 inch high support under the opened door helps to hold the front as you unscrew it  So far, it is working.