Can't find out how to hide/change portfolio page title

I want to be as clear as possible so anyone can help me out. I do not have coding skills, i come from strictly design skill tree. I can’t find my WP version either (sorry bout that) I’ll follow any instructions to achieve my goal though.

I’m using Creative Theme and happy with it so far. But im having some trouble finding the way to hide the portfolio page title that seems to display an awful name that i haven’t typed or chosen. I really don’t want to spend more money as i made and effort going for the $75 Theme and the official domain i’ll have to register later.

My site is actually https://aleyeli.wordpress.com/
The page i am having trouble in is https://aleyeli.wordpress.com/portfolio/

Thank you guys in advance. Have a great day!
Sincerely,

Alex