Have you tried clearing your browser's cache and cookies? Also, does this happen across devices? Thanks!
Just to confirm, have you already tried these steps: https://goo.gl/XpMmk1 ? Let us know if this helps.
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
Just to confirm, have you already tried these steps: https://goo.gl/XpMmk1 ? Let us know if this helps.