Stay away from Travellink!
After I have bought some tickets…read morewith mastercard discount via their page they got cancelled. They told it is because my bank rejected it which is not true as I have called my bank and they have told me that there was a full reversal but not on their end but on travellinks side for no valid reason. It seems to me like they are canceling flight tickets which were bought with a discount and make you buy new tickets without it (as you most likely end up doing as you were expecting your vacation). Second time when I bought my tickets I didn't even need to authenticate myself. It just got immediately trough - This is not okay as someone else could have just stolen my card, enter my credentials and then pay the flights. All in all, very bad experience and I have heard also from others that they have experienced similar things...