Pioneer DJ sz2 not connecting to Serato

Hello Fam ! I bought my pioneer dj sz2 early April to May  and I have been using it, its working fine not until last week that I was playing in a gig after 30min it stop working , I have been trying to connect to Serato but its not connecting to Serato again . my system spec is Mac core 2duo 500gig 6gig ram . pls how can you be of help pls I have a gig next week Tuesday . hope to read from you soonest .