DC before buying bonus reward from Valtan Gate 1 normal mode and grenades bug

So I cleared Valtan gate 1 normal mode and got DC’d before getting to claim normal box. Is there any way to get those loot back? Here is a photo of the amount of materials I got from gate 1 normal mode
Valtan Mats

Another problem is this reset made this game so unplayable since I cant use any of my nades except for destruction grenades. The have 170+ days cooldown. Before this, it was just my whirwind nade but after Valtan patch its all my nades now.