Stop using the connection until you confirm which account was paired. Check the intended number and the linked-device entry on the phone. Do not send a test message from an account you did not intend to connect.
Use the appropriate logout or unlink action for the incorrect connection, then follow the intended number's pairing flow. Do not delete unrelated numbers to clear the mistake. If the displayed account and the phone disagree, contact support with the time and redacted status. Never share pairing codes or screenshots containing a usable QR code.