Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Thank you for posting in Microsoft Q&A forum
Please note that our forum is a public platform, and we will modify your question to hide your personal information in the description. Kindly ensure that you hide any personal or organizational information the next time you post an error or other details to protect personal data.
If you are disconnected from a chat session while contacting with Microsoft Support, you can open another session and enter your case number and information there to get to a live chat agent.
I also can see that you mentioned that you are trying to put in a license key. Would you mind sharing your issue here so I can see what I can do for you.
Thank you for your time