Only a short fun

When I received the article, I was enthusiastic at first. Toll processed, looks good, is ideal cheer touchpad writes well.
Now I have the pen but about two months in use and am totally disappointed. Although the pen writes still quite good, but that's about it.

The cover is now worn out and wobbles around. Although he still holds, but does not feel good.
But the main problem is no longer guaranteed the main function, to operate the touchpad. While the pen is still detected, the operation but has become a real torment. How So?
The pin can be moved on the mobile phone / tablet, so on the touchscreen no longer. There's probably from ne coating of the rubber cap, so that now adheres properly. Tap goes, movements no longer.

For the function for which I bought the pen, it is no longer usable after less than two months. Therefore, only one star, I am disappointed and I expected more.