BTL Sandro rimless flush problem

[Zypher]

I've just had a Bathrooms tonlove sandro rimless toilet installed as part of a bathroom refurb. Unfortunately the flush doesn't reach the front of the bowl and looks like most of the flush is being channelled down the back 5 holes at the back of the pan.

It's a btw toilet fed from a concealed cistern.

Does anyone any ideas what may be wrong? Should there be some sort of diveternin the back to send more water to the side holes than to the bottom holes of the pan flush?

 

[snowhead]

Either, in no particular order;

The water level is too low in the cistern,
or the cistern is mounted too low,
or there's a blockage inside the pan where the flush pipe enters,
or the pan has faulty internal waterways
or the flush pipe has been cut too long and is pushed up against the inside of the pan.

My bet would be the last one.