What are the TON Keeper Token Transfer steps?

[0xBeycan]

I follow the steps below for token transfer but I don't get the same txs as in TON Keeper. Where am I missing? For example, TONKeeper tx shows fee while mine shows refund. You can also see the txs on the scanner.

TONKeeper tx: https://testnet.tonscan.org/tx/d8b6ef5bed84397861e8b3d0d3e4e4e2547d5d2cbec2311a53ceb0cb0be4ca60

My tx: https://testnet.tonscan.org/tx/29aec5b992b3881d7752ef8a08d4b7bde4006853edb1de10786eba8afa18a89d

        const [formattedAmount, senderJettonWallet] = await Promise.all([
            this.formatAmount(amount),
            this.getJettonWalletAddress(sender)
        ])

        const cell = beginCell()
            .storeUint(OpCodes.JETTON_TRANSFER, 32)
            .storeUint(0, 64)
            .storeCoins(formattedAmount)
            .storeAddress(Address.parse(receiver))
            .storeAddress(Address.parse(sender))
            .storeBit(0)
            .storeCoins(0)

        if (body) {
            cell.storeBit(1).storeRef(beginCell().storeUint(0, 32).storeStringTail(body).endCell())
        } else {
            cell.storeBit(0)
        }

        const internalMessage = internal({
            to: senderJettonWallet,
            body: cell.endCell(),
            value: toNano('0.05'),
            bounce: true
        })