Why my domain is redirecting to my other domain ?

Hello everyone,

My **domain name** is : pizzanomie-formation.fr

And I use **the offer** : gold

I had the domain pizzanomie-lamorlaye.fr that i used for my website, but now i'd like to change main domain name to use pizzanomie-formation.fr instead of pizzanomie-lamorlaye.fr but since i linked my p-f.fr domain to the web hosting when i want to access to p-f.fr it redirect me to p-l.fr.
So i tried to create a redirection from p-l.fr to p-f.fr but that didn't worked, my website was down i created a ticket but had no answer from the assistance.

Right now i have reset my both DNS zone, now my web host is only linked to p-f.fr but its still not working. It keep redirecting me from p-f.fr to p-l.fr

Thank's for your help