Thanks for the reply. Again, I'm new at this and trying to understand how some of this works. I don't have a lot in my wallet, but am under the understanding that it is more secure in the vault than in the wallet. I have a vault set up through Coinbase and was trying to store what I have there. I haven't heard of Trezor or Ledger nano S device and will do some research on that option. Again, just trying to why the vault that I already have set up won't allow me to transfer what I have over from my wallet.
To be honest, Neither of them are secured as both of them are online wallets. If you're really looking for security you should use cold storage such as hardware wallets as your bitcoins are stored offline e.g. Trezor, Ledger Nano. If you're short on money, A lightweight wallet like electrum is recommended.
If you're still insisting on using vaults with a 48 hour waiting time when it comes to withdrawals which you can only request one at a time.
Here is a way to deposit funds on it. If these doesn't work, Your only option is to contact their slow support as they are technically the ones who hold your coins.
There are three ways to fund a vault:
On the accounts page,
https://www.coinbase.com/accounts, next to every section there is a link to "Get bitcoin address." This is useful if you need to send bitcoin from outside Coinbase directly into your vault.
On the same page there is also an option to "Transfer Bitcoin." This is useful for moving funds in between your own Coinbase wallets and vaults.
Finally, when clicking on the vault itself there will be an option in the top right to deposit bitcoin.