Tampax pearl

Hey ladies,

So I just came back from a trip in Europe and found their tampax pearl which was on sale for €2.99 so I purchased them in order to save about 7 or 8 bucks from US prices. However these are different from the U by kotex tampons I had which clicked. These ones click but I’m not quite sure how far it is supposed to be inserted. I got my period today and I used the tampon and once I put it in I thought the string was short. There is a blue part of the string that I have inserted a picture of and it says leak proof. Is that blue part of the string supposed to be out or in the body.

I tried posting this already and got no response