What happened
A mobile confirmation asks you to authorize a particular operation. Its arrival immediately after a website click is not enough evidence that it belongs to the intended transfer. Confirm the operation itself: account, recipient, direction, and every item. A correctly saved trade address also cannot authorize an unrelated offer. Keep recipient verification separate from the decision to approve an actual transaction in Steam.
What to check
Open the Steam app directly on the device you normally use, not through a link supplied in a chat. Find the confirmation and read all available details. Compare them with the offer and the site request you deliberately created. If the recipient or contents differ, leave the operation unapproved. Investigate the originating record before trying another action or accepting someone’s explanation that the difference is normal.
Worked example
Suppose you expected to receive one weapon, but the confirmation shows items leaving your inventory. The timing feels familiar, and the recipient name resembles the account you anticipated. The direction and contents still do not match. Refuse approval rather than assuming a later correction will restore the items. Keep the offer identifier so the mismatch can be explained without repeating the operation.
Result and next step
A deliberate approval should match the intended account, recipient, item list, and transfer direction. If anything remains unclear, stop at inspection. Support needs the offer reference and a redacted explanation of the difference, never an authenticator code. Read Steam’s trading practices and CASECS2 delivery stages. Link checking is read-only preparation, while approval is a separate consequential decision about the displayed operation.