Kathie have you thought about taking the applicator apart - pulling the plunger out from the bottom (remove the pessaries first) and then shove the plunger in and out a few times to loosen it? Then maybe if you can get one loose enough for easier application, sterilise that one after each use and transfer each pessary to that one each night. Faffy, I know, but if you get the blister packs, you have to re-use the applicator inside and they do get very loose.
I must admit, I did think last night, using mine, that the blue ones are a bit harder.