i wouldnt worry to much about it, ive had some of my scorpions go for almost 3 weeks without being intrested in food. take the cricket out and offer it another one in a couple of days, if it aint been eating for a while sometimes it can mean the scorpion as getting ready to molt. how big is it? when my emps were very small i use to pull the back legs (as gross as it sounds) but it helped them catch the cricket without it jumping about.