[ECO Bounty] iopay Missing Gas Fee Estimation in "Buy IOTX" Flow

Wallet Address Reporter: io1tkw393kejmxwnd454twc6020sxcyvh5dxqmren

App Version: ioPay v5.3.1 (3973)

Device: Redmi Note 10 Pro (Android 13)

Description

The "Buy IOTX" interface within the Trade tab fails to provide a real-time estimate of the network gas fees required to execute the transaction. While the UI displays the exchange rate (e.g., 282,214 IOTX / ETH) and identifies an "Insufficient ETH Balance" error, it does not specify how much gas is needed to cover the transaction costs.

This lack of information prevents users from knowing exactly how much additional ETH they need to deposit to successfully complete the purchase, leading to a "guessing game" that often results in failed transactions or multiple small deposits.

Steps to Reproduce

1. Open the ioPay app and navigate to the Trade tab.

2. Select the "Buy IOTX" sub-tab.

3. Enter an amount of IOTX to buy (e.g., 1000 IOTX) and select a payment asset (e.g., ETH).

4. Observe the lack of any "Network Fee" or "Gas Fee" line item in the transaction summary.

Actual Result

The interface displays the total purchase price but completely omits the estimated gas fee, even when the balance is insufficient.

Expected Result

The UI should include a clear "Estimated Gas Fee" field that updates in real-time based on network congestion, allowing users to calculate the total required balance (Purchase Amount + Gas) before proceeding.