Use DDU to remove your current driver. Reinstall 17.2.1, select Custom Install, you should be prompted to install Relive before you get prompted to complete the installation by restarting your system.
Have you fix this issue yet? ..... because I have the same problem but .....I have tried DDU and even tired doing a clean install of windows...... but still get no relive tab, I even get prompted to install relive too.... but no tab. This has to be bug on amd's part.
INFORMATION REQUIRED WHEN POSTING A QUESTION Provide your full system info!
1.Show me GPU-Z main screen
2.Uninstall any software for GPU and system tweaking
3.Delete C:\AMD folder
4.Uninstall all AMD software and clean your system in safe mode by DDU program and install 17.3.1 driver