Hello Lucille,
To delete cookies, please follow these steps:
1. Open Internet Options. To do this, click on Start then type inetcpl.cpl inside the Start Search box at the bottom and press Enter on your keyboard.
2. On the Internet Properties window, under the General tab, select Delete.
3. Put a check on Cookies then click Delete.
I hope these steps helped you. Feel free to create a new post for any questions and feedback.
Thanks!
Isabelle