Philips Saeco HD8917 coffee pouring from one hole and from the back

Hi there! Last chance for me after contacting Philips support. I have this machine bought in 2016. I maintained it as per user manual and used official filtring cartridge all the time, and made descaling when requested by the machine. Since a few weeks coffee started pouring from only the right hole. As per usuer manual I found a tool to put in the dispensing holes to clean them, but it didn't change anumything (the tool was long enough to go up to the top). Since a few days, coffee starts pouring (a bit) from the right hole then mainly from the back of the dispensing part. You can see it on the photos, it litterally comes out from the junction of the dispensing part. Coffee otherwise seems okay, and has no dust in it. Do you have any idea how to fix this?

Thanks a lot!