Please follow these steps to troubleshoot the issue:
- Reboot your Wi-Fi router and try signing in again. If you're using 3G or 4G, please see if you're able to access the internet using your browser.
- Temporarily turn off your VPN and antivirus app (if you're using them on your mobile device).
- Try to log in to the Grammarly Keyboard from another location (office, home, etc.) where the internet service provider is different.
If the issue continues, please take a full-screen screenshot of the problem and send it to us by submitting a request at Contact Support.