Hello,
First of all, clicking on the “Max” button will fill in the amount that you can withdraw.
You can also display the balances using the [wallets_balance] shortcode and its variations.
For example, if you want to simply display the current user’s balance of coin with symbol XYZ, you can do:
[wallets_balance template="static" symbol="XYZ"]
To learn more about the available shortcodes and how to use them, please see:
Let me know if you have any more questions about the user balance shortcodes.
with regards