Coupon codes are sent in some special events or promotions of iRender. 

Watch the tutorial video below or read the following instructions:

To use coupon codes

1. Open the iRender dashboard at https://app.gpuhub.net/. 

2. In the navigation pane, choose Recharge » choose Recharge now. Or go directly to https://app.gpuhub.net/recharge.

3. On the Coupon recharge tab, enter your coupon code » click Recharge now.