Blue Protocol Star Resonance No Start Button Fix Guide

Blue Protocol Star Resonance players are encountering a frustrating issue where the game freezes at the title screen, preventing them from pressing Start or logging in. The root cause appears to be invalid account bindings between platforms like Steam, Crunchyroll, or APlus. Below are the key details and potential solutions while awaiting an official fix.

Unresponsive Start Button

Many users report the Start button never appearing or login attempts repeatedly failing. This occurs when the game fails to verify account credentials tied to Crunchyroll, Google, or Apple. Errors like 400 redirect_uri_mismatch also appear during sign-in attempts.

Root Cause

The problem stems from server-side authentication failures. Blue Protocol’s servers are rejecting login tokens from APlus and Crunchyroll, leaving the game unable to confirm player identities. Even those who manage to log in are often disconnected within minutes.

Potential Fixes

Close the game, restart Steam as administrator, and relaunch
Switch networks (e.g., VPN or mobile hotspot) to reset login requests
Clear the game’s cache folder in AppData and restart Steam
Attempt alternative login methods (Crunchyroll, Gmail, Apple)
Log into the official Blue Protocol website first, then retry the game client
Wait several hours and retry during off-peak periods

Note: PC players cannot unlink Steam accounts or log out once bound—only mobile users have this option under Settings.

Account Binding Limitations

The Steam version lacks a logout or account unlinking feature. Players are permanently tied to their initial APlus/Crunchyroll accounts until developers add proper support. The only current workaround is accessing the Android version to log out manually.

Current Status

These issues are server-related and not caused by player hardware or settings. Bandai Namco is actively working on fixes, but until then, intermittent login attempts or patience are advised.