How to Redeem an App Store Promo Code on your iPad

Roblox Login guide - how to use it on both PC and mobiles

How to Redeem and Spend Your Gift Card – Roblox Support

How to Redeem Roblox Gift Card - iOS & Android

Wondering How to Gift Robux for Roblox?

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How to Add Roblox Gift Cards

The answer to your questions is yes, you can use an iTunes Gift Card to buy Robux on Roblox game but that's if you're using it on an iOS device like iPhone

SOMEWHAT FIXED ] I cannot redeem Roblox cards on the website - Website Bugs - Developer Forum

Roblox $50 Gift Card Digital Download, Includes Exclusive Virtual Item

HOW TO REDEEM ROBLOX PROMO CODES ON PHONE & TABLET