Hi there! I understand that you're experiencing an issue where the Demus app's YouTube login is being blocked because YouTube thinks it's a bot. To help you better, can you tell me a bit more about what exactly happens when you try to sign in? For example:
- Do you get a specific error message?
- Does this happen every time you try to log in?
- Are you using any VPN, proxy, or unusual network setup?

Meanwhile, I can offer some general guidance that often helps with this kind of bot-detection issue on YouTube:

1. Check Network Environment:
YouTube sometimes flags IP addresses that generate unusual traffic patterns. If you’re on a corporate network, VPN, or proxy, this might trigger bot detection. Try switching to a different network or disconnecting your VPN if you use one.

2. Clear Cache and Cookies:
Sometimes stale cookies can confuse YouTube’s verification. Clear your browser/cache used by Demus app (if possible) or the browser embedded in the app, then try signing in again.

3. Update Demus App:
Ensure you’re running the latest version of Demus. YouTube occasionally updates restrictions that apps must comply with, and app updates usually address those.

4. Sign in via Google Directly:
If the Demus app supports it, try logging into your Google account via the standard browser outside of the app first, then go back to the app. This can help set up valid session tokens.

5. Disable Automation or Bot-like Tools:
If you have any browser extensions, scripts, or automation tools running, they may be interpreted as bots. Disable those before attempting to sign in.

If you've already tried some of these steps, let me know which ones, and we can dig deeper into advanced troubleshooting. Also, if you have any logs or error codes you can share, that would be helpful.

Are you able to share the exact error message or what you see on screen when the bot detection occurs? That’ll help me guide you more precisely.