Register page has different style than Login page

I’m using Weblizar theme

This is what I got on the login page
https://img15.hostingpics.net/pics/740278Capturedecran20160719a164335.png

And this is the registration page
https://img15.hostingpics.net/pics/645891Capturedecran20160719a164350.png

I didn’t change anything about the login and registration page…
How can I modifie the registration page (and where do I find it) to have the basic wordpress style ?

Thank for your help
https://keeplink.com/