Also the text that automatically appeared in your post when you opened this thread is there so that you can provide others with details of your hub and it’s setup up front (which can save time for all of us). Please consider posting those details.
Please provide your hub model (C7, C8, etc.) and its platform version from Settings>Hub Details.
Check out the following post for help troubleshooting problems and gathering details that will help others to identify and solve the problem you are experiencing: ‼ READ FIRST - Before Posting in Get Help
