Here are the steps for you to close the message received with PDFelement Mac.
Step 1: Click Wondershare PDFelement >Preferences

Step 2: Click General and uncheck the options under Message from PDFelement.

Note: Option "Show tips on Start Page" is available in PDFelement for Mac V9.2.0 and above.
If you wish to disable the AI Sidebar, there are 2 ways to proceed in PDFelement 11 for Mac:
Method 1: Click on the settings icon located in the AI sidebar, and deselect the option labeled [Automatically expand the AI SideBar]. Click Apply to save the changes.
Method 1: Uncheck the option [Always expand the AI Sidebar after opening a PDF] in Preference.


In case it failed to work on your end, please submit the error information via the in-app Feedback for further checking.
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