Hello,
There are possible reasons why you're experiencing this issue with the protected worksheet. It may be caused by the level of protection on the said file. For us to help you with your concern, try to check this article. After opening the said article, scroll down to Unlock ranges on a protected worksheet for users to edit. Follow the steps provided and see if you'll experience the same issue.
If you have any questions, feel free to post it here and we'll be happy to assist you.
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