Hello @Rizwan1
Sorry for what you are facing regarding the recharge and you can recharge using the voucher from both our App and Website.
And regarding the referral code, you will get a unique code by email and SMS as soon as your first SIM is activated. You can also find the code under “My Profile” page. This referral code can then be relayed by you to friends and family. And it is valid for 90 days.
And don't hesitate to contact us through support page (live Chat and Email) or social media channels Facebook and Twitter and we will be more than happy to help.
Thanks for contacting Jawwy from STC
Sebah.
