Why Your Trial Key Won't Reset the Vault (Troubleshooting)

Check the Vault's State

A key only resets a vault that has already been opened. If the vault is still glowing and unopened, using a key on it just opens it normally and consumes the key. Make sure you have actually claimed the loot and the vault is in its dark, opened state before trying to reset.

Check the Item You're Using

The mod only accepts items that are in its reset item tag. If you are using something that is not a trial key (or whatever the tag currently allows), nothing will happen. Try a standard trial key first to confirm the mechanic works, then investigate the tag if you have customized it. A datapack that changed the tag could have accidentally removed the item you are holding.

Check for Conflicting Behavior

If the vault resets but immediately reopens with no loot, or the key is consumed with no visible change, another mod or datapack may be interfering with vault interactions. Temporarily test with only this mod and the base game to isolate the conflict.

Check Ominous vs Normal

Ominous vaults and normal vaults are separate. Using a normal trial key on an ominous vault will not reset it the way you expect. Match the key type to the vault type, and remember the reset keeps the vault's original variant.