Staker Guide
Notice: rToken app DOES NOT support Ledger. DO NOT connect APP using Ledger, otherwise your assets will be lost.
Here is a guide from community: https://www.youtube.com/watch?v=tPzNv3sYmZA

1.The installation, import and connection of Polkadotjs wallet

1) Download the Polkadotjs Wallet

User needs to connect StaFi rKSM App and PolkadotJS wallet when staking KSM, currently PolkadotJS wallet only supports Chrome and FireFox explorers, user could download this wallet by the following links:

2) Import StaFi and Kusama accounts

When you stake KSM through StaFi rKSM App, StaFi accounts and Kusama accounts are both needed to be used and imported into the PolkadotJS wallet in advance. The importing entrance is shown in the screenshot below:
Note: In order to make the Substrate account accurately display the address on each chain, please select "Kusama Relay Chain" when importing Kusama accounts, and select "StaFi" when importing StaFi accounts.

3) StaFi rKSM App connects with Polkadotjs wallet

Enter this page: https://app.stafi.io/rKSM/home, click "Connect to Polkadotjs", and select "Yes, allow this application access" in the pop-up interface and then connect successfully.

2. Select an account

Note: Because of the cross-chain interactions of Kusama and StaFi chains when staking KSM, the user needs to select the Kusama account and StaFi account respectively.
1) Click "KSM" in the upper right corner of the screen, select the KSM account and click "Confirm".
2) Click "FIS" in the upper right corner of the screen, select the FIS account and click "Confirm".
Note: The commission will be paid by FIS token during the delegation operation, please be sure that you have a few FIS token balances.

3. Stake KSM

For details, please refer to the rDOT staking process.

4. Redeem the staked KSM

1) Click "Redeem" on the "Status" page, enter the number of rKSM, and the system will calculate the amount of redeemed KSM based on the current exchange rate.
Confirm the address of receiving KSM. If you want to change the account, click "Edit"to change it.
Click "Unbond" to start the redemption operation.
2) Confirm the following information on the pop-up page:
The number of unbonded rKSM, unbonding commission (it is set as 0.2% of unbond rKSM in the early stage), Relay bridge fee, unbonding period, and the number of KSM you could get.
After confirming that it is correct, click "Unbond".
3) After the signature is completed, the amount of staked KSM and unbonding KSM will be displayed on the "Status" page.
After the unbonding period is ended, the user does not need to withdraw it manually, and the KSM tokens will be automatically sent to the designated address.