Hi,
since the update the loot is not being recovered.

I tried:
-reloading
-delete config & reload to create new one (but nothing changed)

{
  "Give default items upon respawn if the players is having items restored": false,
  "Can drop active item on death": false,
  "Percentage of total items lost (Permission Name | Percentage (0 - 100))": {
    "restoreupondeath.default": {
      "Belt": 0,
      "Wear": 0,
      "Main": 0
    },
    "restoreupondeath.beltonly": {
      "Belt": 0,
      "Wear": 0,
      "Main": 0
    },
    "restoreupondeath.admin": {
      "Belt": 0,
      "Wear": 0,
      "Main": 0
    }
  },
  "Version": {
    "Major": 0,
    "Minor": 3,
    "Patch": 1
  }
}​

Players have the permission "default".
There are no error messages or exception in the console when people die.

I went back to v3.0. Works again. Maybe this information is helpful.

Sounds like you may not be fully updated with Oxide. Please make sure you are using the latest Oxide build.

Yes, my co-admin said it is updated but looks like we missed the last version.
updated from 2.0.4407 to 2.0.4417.
works now as intended.
sorry for trouble, thread can be deleted