Adult content filters locked on for Pico 4?

I cannot figure out why, as my account is an adult (and theres no way to verify that as far as I know). The adult filter button is greyed out and cannot be changed, and the song lyrics toggle looks clickable, but is not. Does anyone know if these can be changed via a save file edit or something?

Im in the UK so I don't think it would be anything like a Chinese region lock...