Rooted phone but cannot change hosts file
So I finally was able to come back to this issue.
I was unable to mount the adb with write permissions either because i was not su or it would deny me to change the host files...

I tried to write the text on the hosts file but it was a file with hundreds of lines... even seemed that android was not able to store it in the "copy/paste" 

So in the end I used Solid explorer 2 from play store.

I wrote a hosts file... then i navigate to the /system/etc/ 
and I rename hosts to "hosts.old" and my "hosts.txt" to "hosts"

until now it seems to be working fine

I'm not considering this an answer because I was unable to write on hosts and someone can come up with a better solution