What happened
Losing your authenticator is an account-access issue, not a trade-address formatting issue. Editing the recipient cannot restore ownership of the Steam account or bypass required approval. A browser that remains signed in may help you inspect information, but it is not a permanent replacement for recovery. Keep the recovery task separate from any item delivery you hoped to request.
What to check
Open Steam Support yourself on its official help domain from a trusted device. Choose the account-access problem matching your situation and follow the current instructions. Supply requested ownership evidence only inside that official process. Do not give recovery codes or purchase evidence to someone who contacts you through chat claiming to speed up the case. After regaining access, review the account settings and restrictions Steam actually shows.
Worked example
For example, a phone is lost while the laptop browser remains authenticated. A stranger offers to remove the problem if you approve a new login on another screen. That request concerns their session, not official recovery. Preserve your existing access safely, record which device is unavailable, and use Steam’s own flow. A support message elsewhere cannot promise an instant workaround for an authenticator you no longer control.
Result and next step
Recovery is complete when legitimate access is restored through Steam and the remaining account restrictions are understood. Timing and evidence depend on the current official process; avoid invented deadlines. CASECS2 support only needs to know that account recovery affects your task, not receive the secrets meant for Steam. Begin at official Steam Support and consult account security recommendations. Resume recipient preparation only once you can identify the correct account reliably.