Paste or type your activation key. Tap “Continue” .
A: This often means the key requires a different Steam account region or is a beta/test key that expired. steam app activate key
A: No. Steam refund policy applies only to direct Steam purchases. Keys are non-refundable via Valve. You must ask the seller. Paste or type your activation key
However, there’s a catch: like the desktop client. Instead, you must use the mobile web browser or a hidden workaround within the app. steam app activate key