he meant that according to the instruction inside the Kata 9 should be VIV instead of IX.

Obviously google says otherwise, but that's because google provides more info on this

I have the same problem with the random index out of bound error, and whenever I try to find a way of operating around said index out of bounds error, my code always returns false when I test it here.

The worst part about this is the fact that my code works perfectly fine when I test it in my IDE with the same input that is used for the tests here.

So your code is not correct. See here: https://docs.codewars.com/training/troubleshooting.

When I press "test" my code is correct, same when I test it in my IDE, but when I press attempt, it says its wrong.