Hello,
Thank you for using our Microsoft Advertising Community Forum!
I understand from your message that you're unable to login to your account. We are here to help and are happy to provide you with information on this matter.
If you are receiving error message "Sorry, we're unable to sign you in because of an issue with your username" and if you are not the only user on the account, the user should be deleted and re-invited.
Please be informed that only Super Admins and Standard Users can invite or delete a new user.
Invite a new user.
- From the top menu, select Tools > Account access > User management.
- From User management, select Invite user.
- Enter your name and email address.
The email address is where we will send instructions for you to complete the invite process. It does not need to be the one that you will sign in with.
- Select a product language, select an account role, and then choose which accounts you will have access to.
- Select Send.
You will receive an email that provides instructions on signing up for Microsoft Advertising using your preferred email address.
- Follow the instructions in the email and do one of the following: After you enter or create an email address, you'll be taken back to Microsoft Advertising.
- If you've sent the invitation to the email address you want to sign in with, confirm your contact information (such as the email address that you'd like to use to receive critical alerts, which can be different from your user name), agree to the Microsoft Advertising Terms and Conditions, and select Save.
-or-
- If you want to sign in with a different email address or create a new one, select sign in using a different email address, and then select Sign in with a different Microsoft account in the new window. You'll be prompted to enter a different email address or to create a new one.
Delete an existing user.
- From the top menu, select Tools > Account access > User management.
- Select Delete.
For mor information please check Change my password or user name (microsoft.com)
Our support teams are happy to discuss your account in more detail via phone, chat, or email, to provide review assistance. Please see our supportpage to reach out!
Alternatively, I will private message you here to assist with this matter. Please check your inbox here for further assistance.
Kind regards,
Marwa| Microsoft Advertising Support Specialist | 0800-633-5915