I have been dealing with Peyronies for one year and two months. I was diagnosed about three months after it started. My urologist had limited knowledge but he did start me on Pentoxifylline, which has helped manage my flaccid pain. I found this site about six months ago but have really been more in depth in the past two months. I decided to try traction and I bought an X4 device. Unfortunately, my condition resulted in notable flaccid shrinking of an already short flaccid penis, making the device impossible to wear. I would either slip out or the extent of stretching was not doable. So now I'm moving on to manual stretching. And I see my 3rd urologist next month. Peyronies has been an unwelcome guest but I remain hopeful for the future.
You have the penimaster pro with a suction cup. Give it a try!
Try warming yourself up beforehand with heat. Some use a sock full of uncooked rice, which is then heated in the microwave. I use chemical handwarmers.
That should help with the shrunken flaccid issue and make it easier to strap in to your device.