Love event mount drop question

[Mairek-medivh]

There is a clarification from Blizzard posted yesterday.

The X-45 Heartbreaker only has a chance to drop from the first Heart-Shaped Box per Warband per day

Hello. We recognize that we’ve made some changes to holiday reward drops over the last couple of years, and we can see that a bit of clarification is called for here. For Love is in the Air 2025: Legacy drops, such as the X-45 Heartbreaker, have a much higher chance to drop on your first attempt of the day (WoW account-wide). There is a very small chance to receive legacy drops on subsequent attempts made the same day, for players who enjoy running the content on multiple characters. New drop…

If you had actually gone to the links provided you would have found it.