Convenient but wears out quickly!

I bought a few weeks ago my shell.
The iPad Air fit into it well, although the upper right corner is not quite the iPad held.
Now since last week has the holder no longer function because it no longer holds the iPad and the constant re-pull the bracket to the iPad, it is very badly worn (and after 3 days).
In general, the holders are more likely to not really sure!
Very bad!