You can follow these steps to view your invoice:
1. Log in to your account from employer.apna.co.
2. Click on your name and then click on Manage apnaCoins.
3. Click on View History.
4. Click on Invoices. Browse through the displayed transactions and then click on Download Invoice for the corresponding transaction.
If you want to download GST invoice, please make sure you have added your GST details on your profile.