In August 2018, HiveMP changed the way developers signed into the HiveMP Admin Console. By unifying the player and developer account systems, HiveMP enabled new use cases such as granting players "moderator" permissions in projects while improving security for developers.
If you created an Admin Account prior to August 2018, you'll need to create a user account on the new system, and grant that user account access to your existing projects and billing accounts.
Create an account
Open up the Account Portal and create a new account. You can use a password with your new account, or sign in to the Admin Console through an OAuth provider such as Steam if you prefer.
Once signed in, fill in your profile information. For developers we recommend filling in a display name and full name.
If you're working in a team or with a publisher, turning on "Allow my account to be discovered by my email address" and "Allow my account to be viewed by anyone" can make it easier for other developers to give you administrative access to HiveMP projects.
On the Handle page, copy or note down the User ID. You'll need it when granting this new account permissions to your existing projects and billing accounts.
You'll need to repeat this process for each project that you've been granted direct access to.
In the Admin Console, switch to the project you want to grant access to using the Project Switcher in the top-right of the console.
Open up Legacy Administrative Access under IAM (Access Control). If you see your Admin Account username listed, then you've been granted direct access to this project. You should only add a role-based grant if you've been granted direct access.