you need to have potence + minions >15 (1 'laze around' gets you 1 potence, one 'summon minions' gets you 3 minions - and 'masking as human' during laptop shopping consumes 1 potence)
the divine order == 100 and choose 'with the power of the divine' during the figh
if that doesn't work, check that you're playing the most up-to-date build!