I logged on to my mail on someone else's device and now I'm afraid they have access to...
GetHuman756874's customer service issue with Yahoo from June 2018
Help with my Yahoo issue
Before contacting them, items GetHuman756874 may need:
Email on Account, Username, Password, and Name of Account Holder
GetHuman756874's next move: go to the Yahoo help center.
Yahoo doesn't have a customer phone number that is answered by an agent. Instead, GetHuman756874 will want to follow the link below to head to their help center. We will check on GetHuman756874 later to make sure it's all set or try to help escalate.