I can't help you on the repair side of things but I do know how you feel. After going for a SUP yesterday morning and about to hang my board up in the garage I noticed 2 big cracks in the carbon on the topside of the rail near where I stand. I was pissed. Awesome start to the day ruined.
But thanks to this forum I've found someone in WA to do the repairs. Fingers crossed it not serious.
Hope you get the answers you need on here as well. Best of luck bud

Damn! Perhaps you had some of those pesky penguins smashing into your board? Not familiar with that area (apart from knowing about the penguins), but Im sure you can get that repaired pretty easily ...

Mad me laugh with the broken HEART (Sorry)

This is a major problem with all boards.
This is a finicky spot for new boards and the same for repairers. Make sure you find someone good and stress you don't want this happening again.
Hopefully the repair will strengthen the original problem.
Unlike finboxes I feel you won't have the same problem again after the repair.