According to Cohen, players who want to carry their Wordle stats over should open the game with the last URL that held their stats. So this is either the original Power Language one or the New York Times version. “This will automatically redirect them to The New York Times Wordle page, carrying their stats and streaks with them,” Cohen said and emphasized that without redirecting, the stats won’t carry over. Essentially, if you typically use the “powerlanguage.co.uk” URL to play, don’t try to access the game directly through The New York Times website; if you visit the “powerlanguage.co.uk” URL, it should automatically forward you to the new address.

Source: https://www.distractify.com/p/why-did-my-wordle-stats-reset