PROMOM neo experience

Hey everyone, so I have been using the promom neo breast pump for a couple of weeks now and it has been giving me good results. I bought another unit because I have to go to work soon and wanted to build a milk stash. This time they delivered the promom neo pro. Although it's the newer sleeker model, I felt that the suction was inadequate. I was not getting the same results even with the same settings as the promo neo.Sometimes I would pump for the whole 20mins and just get 20ml.

At the same time when I used the older version I got a good output.

There was also a leak from the bottom.

Has anyone else had this experience? Or is it just me?

I contacted the customer care number. They didn't give ve me a solution to fix this.