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+---
+title: Mainnet App Guide
+---
+
+\<iframe src="https\://player.vimeo.com/video/941409534?h=b6e51ff5fa" width="640" height="360" frameborder="0" allow="autoplay; fullscreen; picture-in-picture" allowfullscreen>\</iframe>
+
+\
+Connecting to the App
+---------------------
+
+1. Navigate back to [https://app.dev.opendollar.com](https://app.dev.opendollar.com/) in your browser.
+2. Connect your wallet by clicking the "Connect Wallet" button.
+3. Add "[Arbitrum One](https://chainlist.org/chain/42161)"  to your wallet & switch networks.
+4. Click "Create Vault Facilitator" and complete the transaction, make sure you have enough gas (ETH) to process the transaction.
+
+## Creating a Vault
+
+1. Click "Create Vault".
+2. Select the collateral type to deposit.
+3. Enter the amount to deposit and how much OD to borrow.
+4. Click "Approve (Token)", this will initiate a transaction.
+5. Click "Review Transaction" to see an overview of your vault.
+6. Click "Confirm Transaction" to create your Open Dollar vault.
+
+## Viewing your NFVs in Metamask
+
+Once your NFV is minted, you can view it in your Metamask wallet by adding the contract.
+
+1. Open Metamask and select the NFT tab.
+2. Click "Import NFT".
+3. Input the contract address: 0x0005AFE00fF7E7FF83667bFe4F2996720BAf0B36
+4. Input the Token ID, which is your your vault number without the "#" symbol. You can also find your Token ID from your vault creation transaction.
+
+![](</img/Open Dollar Vault Token ID.png>)
+
+5\. Click "Import".
+
+## More Vault Functions
+
+### Deposit collateral
+
+1. On the app page [https://app.opendollar.com/](https://app.dev.opendollar.com/#/) click on your vault.
+2. Click "Deposit & Borrow" at the bottom of the menu.
+3. Enter the amount of new collateral to deposit.
+4. Click "Unlock (Token)" & sign the transaction to approve adding more collateral.
+5. Click "Review Transaction" to preview your updated vault.
+6. Click "Confirm Transaction" & sign the transaction to update your Open Dollar Vault.
+
+### Borrow OD
+
+1. On the app page [https://app.opendollar.com/](https://app.dev.opendollar.com/#/) click on your vault.
+2. Click "Deposit & Borrow" at the bottom of the menu.
+3. Enter the amount of OD to borrow.
+4. Click "Review Transaction" to see your updated vault.
+5. Click "Confirm Transaction" & sign the transaction to update your vault.
+
+### Withdraw Collateral
+
+1. On the app page [https://app.opendollar.com/](https://app.dev.opendollar.com/#/) click your vault for other actions.
+2. Click "Repay & Withdraw" at the bottom of the menu.
+3. Enter how much new collateral you'll withdraw & how much OD you'll repay.
+4. Click "Review Transaction" to preview your updated vault.
+5. Click "Confirm Transaction" & sign the transaction to update your vault.
+
+### Repay OD
+
+1. On the app page [https://app.opendollar.com/](https://app.dev.opendollar.com/#/) click your vault for other actions.
+2. Click "Repay & Withdraw" at the bottom of the menu.
+3. Enter the amount of OD to repay.
+4. Click "Unlock OD" & sign the transaction to approve the use of your OD.
+5. Click "Review Transaction" to preview your updated vault.
+6. Click "Confirm Transaction" & sign the transaction to update your vault.
+
+### Closing a Vault
+
+1. On the app page [https://app.opendollar.com/](https://app.dev.opendollar.com/#/) click your vault for other actions.
+2. Click "Repay & Withdraw" at the bottom of the menu.
+3. Enter the total amount of collateral you have deposited into this vault.
+4. Enter the total amount of outstanding OD you have borrowed from this vault.
+5. Click "Unlock OD" & sign the transaction to approve the use of your OD.
+6. Click "Review Transaction" to see your updated vault.
+7. Click "Confirm Transaction" & sign the transaction to close your vault.