Use the device maker’s account-protection tools where available and contact the service about the exposed credentials. Treat the lost device as a possible access risk rather than assuming closing another app session removes its saved login.
Protect the device account
Follow the manufacturer’s documented lost-device process for the phone, computer or tablet. That may be separate from the streaming service. Use a device you control and avoid entering recovery information into links sent by an unexpected stranger claiming to have found the equipment.
Contact the service privately
Explain which account may be exposed and ask about changing credentials or removing device access where supported. Use the known order reference. Do not post the login publicly in an attempt to identify the account or ask other users whether it is still working.
Restore your own setup
After the account action is confirmed, update authorised devices using the new instructions. Review where the old credentials were stored and keep a better recovery record. If the lost device also contained payment or email access, address those accounts through their own official security routes.
