Guild Wars 2

Hi guys my problem is this. I have made many attempts as this puzzle only to realize the the second mile stone flag onwards is not coming out for me. i did it with a friend pass the same place he pass actually followed him exactly and he is seeing the second flag and i don’t see it. he did the puzzle already but from the second flag onwards no flag at all. so i am not sure if i will even get my reward when i get to the end.

Anet can you give me some advice on this if you have any.

its ok. i seed the puzzle through till the end and i got the reward and mastery point