Changing Air Filter

[Hayd]

Hi, I wonder if anyone can offer some advice please.  I have a 2016 Honda CRV on a 1.6 diesel.  I am changing the air filter and I have undone all three clips.  However for the life of me, I am unable to remove the housing to access the filter.  I can see that here appears to be two slots to the right that the housing fits in, but still having a nightmare.  Any tips please. 

[Trevor]

Make sure there is not a screw holding it in place