If you want to delete multiple messages on TikTok, there are a few different ways to go about it. The first option is to open the app and select the messages you want to delete. Once you’ve selected them, press and hold on one of the messages until it starts shaking. Then, release it and select “Delete” from the menu that pops up. If you want to delete all of your messages at once, open the app and tap on the three lines in the top left corner. Next, select “Settings” from the menu that pops up. Under “General,” tap on “Messages” and then select “Delete All Messages.” ..