Auricula from seed

All I can say is that, in the past, I have sown primula seeds on top of compost in a seed tray, then watered it and covered with another seed tray and left it over winter so the frost can stratify the seed. I ckecked it for water occasionally, but it was ok. I had some lovely seedlings appear in the spring. If I were you, having put the seeds in the fridge, sow them on top of compost, cover with a seed tray and put them in the shade to keep cool and check for watering.