"The GPS shows the right direction."

Translation: Το GPS δείχνει τη σωστή κατεύθυνση.

[efrossyni]

we only add greek n to the article when the next word startσ with κ, π, τ.

[jaye16]

There are two or three issues which slipped in incorrectly and we are unable to correct them when we are in Beta. The use of ν as here and the second accent on certain words. We try to correct them individually and do appreciate it when they are brought to our attention. So, thank you.

[Theo635631]

Does δείχνει προς τη σωστή κατεύθυνση work, or does that change it more to points in the right direction?

[G.Georgopoulos]

I see it's one of the accepted answers, but, technically, it's what you wrote and I personally prefer that.