Sounds like Πηγαίνω πού θέλω as far as I am concerned.
Yes the omikron in οπου is subtle here... I think end of πηγαίνω and beginning of όπου bleed into each other since they are the same sound.
I don't remember what I wrote and the program hides what I wrote. Again, this should be corrected!
This is a technical issue occurring in every course from time to time. The good thing about this is that you still get to repeat the exercise again until you get it right, so you get multiple chances to answer correctly.