NOx sensor issue after DPF replacement

Hey guys,

I have changed DPF in warranty by factory recall on my DS7 2019. After 20km I got Second NOx sensor issue.
Now car says it won’t start after 1100km…
Is there anyone else with the same issue after changed DPF in this factory campaign? Have anyone got the same issue?
Service said that DS doesn’t want to cover NOx sensor replacement, even it broke after change of DPF which probably caused issue with NOx sensor.

Any suggestions?