Cannot remove Avast from Asus Zenpad 3S 10 Z500M

I have an Asus Zenpad 3S 10 Z500M running Android 7 and I tried Avast recently but now I can not remove it. I deactivated the admin permission but still, when I uninstall, it redirects me again to manage the admin screen. I tried to email support but they are very slow to reply and never give me a solution, all they knew is to deactivate the admin.