Hi, Iniobong Nkanga
Could you please provide more details so that I can better understand the issue?
Based on your description in scan to email, are you setting up the printer for the scan to email through SMTP authentication with Microsoft 365?
If yes, you need to make the right configuration.
More information can be found How to set up a multifunction device or application to send emails using Microsoft 365 or Office 365 | Microsoft Learn
For questions about using the printer, you can still refer to the documentation Fix issues with printers, scanners, and LOB apps that send email using Microsoft 365 - Exchange | Microsoft Learn
Regarding the problem of connection failure, you can also
1.Make sure your device is connected to the internet and has a stable connection.
2.Try connecting using a different network to troubleshoot network issues.
3.Restarting the compute may resolve the connectivity issue.
If my answer is helpful to you, please mark it as the answer so that other users can refer to it. Thank you for your support and understanding.