There are a couple of reasons why your Whitepages profile might have old or otherwise incorrect info. This site scrapes new data from official records periodically, so recent changes might not show up for several months. It’s also possible that one of the sources Whitepages uses is just incorrect – this can happen if you share a name with someone who’s around the same age, or if somebody made a mistake while filling out a form.
Whitepages isn’t actually able to edit or amend third-party records itself, so if you’d like to rectify any of its errors, you only have two options: remove the entire profile (which is better from a privacy standpoint) or contact your local council to verify your information is up-to-date.