The problem of failed EOS login authentication

My UE5.6 project uses both Steam and EOS subsystems. I’m encountering an authentication issue:

  • When Steam is running: EOS authentication fails with EOS_AccessDenied (110010) - “Deployment user access forbidden”
  • When Steam is closed: Login succeeds without issues

Error Details:
LogEOS: Error response from backend
ServiceName: EOSAuth, Operation: TokenGrant
ErrorCode: errors.com.epicgames.eos.auth.deployment_user_access_forbidden (110010)
DeploymentId: eb50bbacca604af4a345574f2b0ba193

Current Setup:

  • Steam App ID: 480
  • EOS integrated with Steam authentication
  • Both subsystems initialize correctly when Steam is running

Question:
Has anyone encountered this DeploymentId mismatch issue with Steam+EOS integration? Should I verify the DeploymentId in the Epic Developer Portal, or is there a configuration I’m missing?

Thanks in advance!
The following pictures are some of my settings.