Bosch dishwasher dispensing drawer not closing

Hi

The powder dispensing drawer will not close on my Bosch dishwasher. I have been using it for a while like this but the cleaning is getting worse and worse and I am wondering now if this is part of the problem.

At the moment I use tablets and put them in the bottom of the dishwasher at the start of the cycle.

Can anyone advise whether the drawer may be a factor in the problem and it is worth having it looked at?