[ECO Bounty] iopay "MAX" Button Fails to Auto-fill Amount

App Version: ioPay v.5.2.0 (3970)

Screen: Send/Transfer

Date Reported: March 6, 2026

Description

When a user attempts to use the "MAX" button to automatically fill the maximum available balance into the "Amount" field, the field remains empty or does not update. The current balance is shown as 0.3859 IOTX, but clicking the button provides no response in the input field.

Steps to Reproduce

1. Open the ioPay app and navigate to the Send screen.

2. Ensure there is a non-zero balance (e.g., 0.3859 IOTX).

3. Tap the "MAX" button located next to the "Amount" input field.

4. Observe that the input field does not populate with the balance.

Expected Result

Tapping "MAX" should automatically populate the "Amount" field with the total available balance (minus necessary gas fees).

Actual Result

The "MAX" button is unresponsive, and the "Amount" field remains at $0. When "Next" is pressed, the app triggers a "Receipt Address is required!" error, but the amount remains unpopulated.

Wallet Address: io1tkw393kejmxwnd454twc6020sxcyvh5dxqmren

Device & Environment:

-Operating system: Android 13

-Device model: Redmi Note 10 Pro