Thank you Old-Polack and all you guys who assisted me from yesterday! It's done, it's solved finally! I modified the /etc/fstab file as Old-Polack suggested and then finally I could mount the partition.
Then, I had to add permissions as root to read and write there and apply that to all sub folders.
I was feeling like George Constanza about all of this

Again guys, Thank you so much for all your help! I think I'll backup my last ntfs partition soon to change it for ext4.
Cheers!