To clear your cookies and cache, click on the three dots at the top right of your Chrome browser. Towards the middle of the menu that pops up, you will see an option for "Delete Browsing Data". Click on this. Alternatively, you can press Ctrl + Shift + Delete to open the menu.
It will open in a new tab. Ensure "All Time" is selected from the drop down menu, and that the bottom two options ("Cookies and Other Site Data" and "Cached Images and Files") are selected. Click "Delete Data" to clear it out. Depending on if you have ever done this before, it may take some time to clear. After it has been cleared, please close and restart your browser.