[ECO Bounty] iopay Watchlist "Add/Remove" Toggle Failure

Summary

The "Add to watchlist" toggle (plus/check icon) in the Markets section does not reliably update the asset's status. When a user attempts to uncheck an asset (like IOTX), the UI briefly changes but reverts or fails to execute the removal, preventing users from managing their watchlist.

Impact

Poor User Control: Users cannot effectively customize their asset tracking, leading to a cluttered and irrelevant watchlist.
Functional Frustration: The repetitive failure of a basic toggle button creates a negative impression of the app's overall responsiveness and reliability.

Steps to Reproduce

Open the ioPay app and navigate to the Markets tab.
Select the Watchlist sub-tab.
Locate an asset that is already checked (e.g., IOTX).
Tap the check icon to remove it from the watchlist.
Observe that the icon may flicker or change to a "+" but the asset remains on the list or the change does not save.

Actual Result	Expected Result
Tapping the toggle icon (check/plus) fails to consistently update the asset's status in the watchlist.	Tapping the check icon should immediately remove the asset from the watchlist and change the icon to a plus sign.

Proposed Solutions

State Management Fix: Ensure the UI state is correctly synced with the backend database upon every tap.
Visual Feedback: Add a "Success" toast notification (e.g., "Removed from Watchlist") to confirm the action has been processed.

Wallet Address: io1tkw393kejmxwnd454twc6020sxcyvh5dxqmren

Device & Environment:

-Operating system: Android 13

-Device model: Redmi Note 10 Pro