[ECO Bounty] iopay Missing "Already Imported" Validation

Summary

The ioPay app fails to detect or notify the user when they attempt to add a wallet address that is already imported in the ioPay.

Environment

• App: ioPay v5.0

• Feature: Address Book / Add Address

• Date: February 23, 2026

Steps to Reproduce

1. Open the ioPay app.

2. Navigate to the Address Book section.

3. Enter a wallet address that is already imported (e.g., 0x5d9d...5e8d).

4. Input a name (e.g., "import wallet") and attempt to save.

Actual Result

The app allows the user to input the address and name without any real-time validation or prompt indicating that the wallet is already imported.

Expected Result

The app should display a prompt or error message (e.g., "Wallet already imported" or "Address already saved") as soon as a duplicate address is detected to prevent redundant entries.

Wallet Address: io1tkw393kejmxwnd454twc6020sxcyvh5dxqmren

Device & Environment:

-Operating system: Android 13

-Device model: Redmi Note 10 Pro