Follow the steps below to clear the Chrome cache, history, and cookies on iPhone and iPad:
1. Open Google Chrome on your iPhone or iPad and tap the Options icon ...
2. Tap Settings
3. Scroll down and tap Privacy.
4. Tap Clear Browsing Data.
5. Select which Browsing Data to clear (Browsing History, Cookies, Site Data, Cached Images and Files) then Tap Clear Browsing Data.
6. Tap Clear Browsing Data again to confirm your selection.