Hi Phamliy! This page is used to claim subsidies for on-chain issues related to staking. You can find information about past subsidy distribution events through the links below:

A. V2 delegation bug on 30/12/2022

B. Vault commission issue on 07/06/2023

Funds can only be claimed once, and subsidies that have been claimed will be marked as "claimed".

Multisignature addresses cannot claim funds through this page. After checking the amount of rewards you should receive and the source PID from the reports above, please go to polkadot.js app to claim your rewards. Here is the tutorial for Multisig.