''Pinched/warped'' lower Invisalign aligner from the beginning. Bad fit. Faulty dental impression or aligner? (photos)

If the aligners are not fitting from the very beginning, it is likely either due to distortion during the initial record or a distortion during the manufacturing process. Invisalign does provide a warranty fit and your doctor can request remake of the first 2-3 aligners to see if the same distortion problem persists. If the fit is good for the new aligners, then you know the problem is in the manufacturing. If the new aligners have the same distortion, then you can rule out manufacturing defect and conclude that a distortion occurred during the records process and a new impression/scan has to be made. 

Hi Aleksaaa, unfortunately there has been an issue with the impression/scan,the planning, or the aligner manufacture. Aligners will be a very close fit each time you change them to create incremental movements. Given this is the first one it is likely to be the records or the manufacture. It is propably worth noting that product isn't manufactured by Invisalign. 

Illfitting aligners will create unwanted movements. These normally present as mesialisation (tipping forward) and intrusion (pushing in)

Hope that helps.