Phimocure doesnt work for one guy

Is it at all possible that for some reason Phimocure just wont work for some people? I've had the kit for around a month now with no results; Here is my story;

First unboxing, found the ring that fit me best, size 4 was easy enough to get in and also pretty easy to get out, 5 was very painful and even more painful to get out. I kept with 4 for a week, I would fit the ring in the morning before work, have it in for an hour and repeat this 2 more times throughout the day, applying the cream in the kit after removing the ring.

After a week I was getting restless with the lack of progress, so I started keeping the ring in for longer, until I had it in for 5 hours. Removing after this was very painful even though the ring was pretty loose and left lines on my Meatus, from this point, inserting the 4 was difficult, So I went down to the 3, that barely stayed in at all for a week.

I am again at the point of using the 4th ring, with the same routine as before, but the past week and a half have been the exact same, light pain for 20 seconds after putting in the ring, after an hour of wear, struggle to get out and painful.

Am I doing something wrong? I know that In the past 2 weeks I also accidently left the 4th in overnight (4 hours of sleep though) and woke up with irritation, but I didnt feel like I lost any progress.

Source: http://www.network54.com/Forum/244184/thread/1468954567/last-1469034019/Phimocure+just+not+working-

Editor Note: See right hand link for my theory on how masturabtion may be cause of phimosis