Once step 7 is introduced WINS/LOSSES is not the correct terminology. SCORE should be used instead. For example, if initially there are 5 wins, followed by a loss, it would show: LOSSES:4 However, 4 is the current score, (5 WINS - 1 LOSS).
pause is needed in step 7 as well in order to display text.
It's necessary to add a pause after addScore in order to display showNumber and showString based on this ticket: https://github.com/Microsoft/pxt/issues/2280