Astscherre unfortunately inadequate

Due to very good rating, I decided last year in October for this lopper. Thanks to the translation they initially proved to be helpful in various cut-back actions in the private garden.
After about 2 weeks, the replaceable blade broke when cutting a 45mm strong Buchenastes. Exchange via Amazon ran super, Scissors has been completely withdrawn.
And I was asked if I would like to order the same product again and I decided to yes.
So I took advantage of this scissors extremely careful as possible Aste still 4cm.
In spring and summer then the scissors were not used. Last week it was possible my wife !!! to a branch under 55mm also cancel blade.

Then I have the Lopper in terms of their primary function (cut branches) and setting up 55mm assessed as unfit.
In various reviews I read, the Fiscas do not want to replace the blade in warranty period (purchase price EUR 20), because you classify them as wearing part.
On the other hand, what use a spare blade when it breaks again soon.

Conclusion: The lopper is mE for disabled, I'll look for another brand.
In my opinion, acting through the gear ratio a significantly higher strength to the cutting blade, which is then either geometric or material properties ago (eg yield strength) is not designed to safely and for a long time (> warranty) branches (also hardwood, as not restricted) to cut with 55 mm diameter.
I have no idea why there are so many pos. There reviews, I can not understand, unfortunately.