You can easily restore Invoice, Estimate, & PO from Trash in Moon Invoice by following the steps below:

1. Open the Moon Invoice application on your device or tap on this link.
2. Navigate to the Sales → Invoice.
3. Now, click Status and select Trash, then click the edit icon.
4. Now, select the Invoice you want to restore, then click the restore icon.

Note: 

Follow a similar process for Estimate, PO, and other modules.