Unfortunately unsuitable for continuous use

When I bought the Espresso capsules Xavax, I was glad to have finally found an alternative to the Nespresso capsules. The price I was a little too high but have then nevertheless decided to do it. I have used the capsules to my Nespresso machine "Pixie" by Krups. Unfortunately I have to say after two months use, that I am very unhappy. The coffee tastes less intense than the original capsules. The handling is also quite cumbersome and annoying.
In addition, the capsules VERY often remain stuck in the machine, then sometimes rise when trying the capsules rauszupulen (giant mess!). It often happens that the machine "stops" and sends no more water through the capsule. So we can not press the ground coffee so much, ergo: even less strong taste.
One of the three capsules has now, after two months of use, already a huge dent, it looks as would the capsule "melted" here. Another has a hole in the cap. The caps themselves look very demolished. The result is that I am now gone back to the capsules from the grocery store, or cook my espresso on the stove. Pity!