Hi Hamza,
Thank you for contacting us. First of all I would like to humbly apologize for editing your post; the coupon code was not meant to be shared in a public area such as this current board.
Secondly, the coupon code was suppose to be applied to the JoomlArt's product and not on any of StackIdeas products. You can use the coupon by logging in and then navigate to our partners page. From there, click on the coupon's name itself and it should redirect you to JoomlArt's website and apply the code for you. I've checked and currently, using this method, the coupon works. Would you be kind enough to try this method?
Let me know if there's anything more that I can help you with.