If you currently don't own any cryptocurrencies and would like a hassle-free way to deposit to your stake account, you can purchase and deposit crypto directly via the MoonPay service found under the Buy Crypto menu from the wallet.
For any questions or issues experienced with transactions made using the MoonPay service, you will need to contact their support team directly, but make sure to always check your email first since they will be sending you a confirmation as soon as your transaction is processed.