Why OneNote has issue after update IOS, Android System?

​Question:
Why the OneNote cause the issues after update IOS to new version?

Answer:
This is because the OneNote latest version still unable to support the new IOS system.

Solution:

• Method 1. Update the OneNote to latest version to check whether it can fix this issue.
• Method 2. If the latest OneNote version cannot fix this issue, you have to wait the new OneNote version to fix this issue.
• Method 3. another way is return back the previous IOS system version.