Why custom ringtone not work in watch 8 ? Any solution ?if not, is in solve new upgrade.

Watch 8 why custom ringtone not work ? What solution ?

Custom ringtone not work in watch 8 why ? What solution ? Immediatly solve this.custom ringtone is basic funcntion for customer.it is discredit for companany in my view.i cmplain this from long time.but company take no step for this problem.pl.reply ...