I presume you mean the bolts that hold the secondary opener?

This has probably happened because the frame has moved or because the
glazing was put in incorrectly. Send them a letter telling them that
this is what you suspect and that you want the product repaired properly
or replaced. There is more information about this sort of prblem on
here.

Alternatively, the problem may be with a slight movement in the frame.
If you can get the door open you might be able to adjust the bolt. They
sometimes unscrew their fittings too. They are attached from below and
above (at the bottom and top respectively.)

Thanks for all the replies. Yes, its the lacth(bolt) for the secondary
door that is causing issues. As said in the thread, I should write a
letter to complain.
In the meantime, I was wondering whether I could buy the necessary
keys (from B&Q ???) to adjust the hinges to the door open...

Thanks for all your help.
Sandiyan.