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Dear Howard,
Thank you for the reply.
Thank you for the detailed reply.
You mentioned all the word "No" is displayed as "Well" including the column settings, the problem maybe relate to the SharePoint backend.
Given this situation, more resources need to be involved on the issue in your environment. I suggest you contact the administrator in your company if you aren’t the administrator and follow the steps in the article to open a ticket, this is a most efficient way to fix the issue in your environment. Because support team there will have specific diagnostic tools that can help troubleshoot this issue further, and their support will continue to investigate this issue and provide suggestion for you.
Appreciate your understanding.
Sincerely,
Jazlyn | Microsoft Community Moderator