There are 2 kinds of balances Traders can utilize to open positions, create orders and do swaps - Wallet and Account.

Wallet balance is basically all the assets you have on your blockchain wallet, such as Metamaks, OKX, Bitkeep, WalletConnect services, etc. Wallet balance can be checked via your wallet mobile app or browser extension.

Account balance is used to store Traders' assets on Primex. It becomes very handy in money management when you want to use limited amounts of your holdings for trading. When trading or providing liquidity, users can get rewards in ePMX tokens which are then claimed to the Account balance and can be used for paying trading fees in particular.
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Funds can be freely moved between Wallet and Account balances.
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Please, refer to How to check your Trader Balance for more details.