Hi! Thanks for reaching out about the Hi.AI app not connecting to the internet or letting you log in. I want to get this sorted for you. Just to make sure I understand correctly—when you say it won't connect or log in, does this happen every time you try, even after resetting the router and modem and when using your phone as a hotspot (tethering)? Also, are you seeing any specific error messages when the login fails?

Meanwhile, here’s a set of steps we can try to troubleshoot this:

1. Check Internet Connection on ChromeOS:
- Since you're on ChromeOS version 14816.131.0, please make sure your device itself is definitely connected to the internet by opening a browser and visiting a couple of websites like google.com.
- Confirm that other apps or services on your device also have internet access.

2. Clear Browser and App Cache:
- For ChromeOS, open Chrome and go to Settings > Privacy and Security > Clear Browsing Data, and clear cached images and files.
- If Hi.AI is a web app or uses WebKit, clearing this cache sometimes resolves connection issues due to stale data.

3. Restart the Hi.AI App:
- Fully close the app and restart it to refresh the connection.

4. Update the Hi.AI App or Browser:
- Check if there are updates available for the Chrome browser or the Hi.AI app and install them. Sometimes outdated versions cause login/connectivity issues.

5. Review Login Method:
- Some AI apps recently updated their login flow. If you previously used social logins like Discord, Facebook, or email+password, those might no longer be supported. Ensure you are using the latest login method recommended by Hi.AI.

6. Disable Any VPN or Proxy:
- If you have any VPN or proxy enabled, try disabling them as they can sometimes block app server connections.

7. Try Incognito Mode or Different User Profile:
- Testing the login through an incognito window or a fresh ChromeOS user profile can help identify if the problem is related to your current session data or extensions.

If after these steps the problem persists, it could be due to backend server issues or recent login process updates. In that case, submitting a support ticket directly to Hi.AI through their official channel would be the next step.

Could you try these and let me know which steps you've done or if you see any error messages? That will help me guide you further!