The Streamloots ID is not your username. The Streamloots ID is a unique alphanumeric code. Each user has their own, and it allows you to link your Streamloots account to the pay portal. The format must be similar to:
Please note that the Streamloots ID is not your username. If you try to use your username as your Streamloots ID, your pay portal account will be locked. If this happens, please submit a ticket here and provide us with your Streamloots username so that we can unlock your account.
For more information on Streamloots Pay Portal, take a look here.