When a visitor has given their consent, their preferences will be stored in the CookieConsent cookie in their browser until it expires. This means that the next time the same user visits your website, they will not be asked for a consent again.
When the CookieConsent cookie expires, the first time the user comes to your website again, the cookie consent banner will automatically reappear and the user will be asked for consent again.
If you are setting up Cookiebot CMP on your own website, this is very likely the reason the banner doesn’t appear to you anymore. If you would like to see the banner, open a private browser window or incognito mode and enter your website’s URL – the banner should then be displayed.