What gauge of spokes are used on the wheels?
All of our wheels use 14 gauge spokes. There was a time we used 12 gauge spokes and we had a lot of issues. Since we switched to 14 gauge spokes and improved our spoke pattern spoke issues are almost none existent.
The most common issue now is when people first assemble their kit and go for the first few rides. At this point, the spokes should be checked to see if any come loose. If a spoke comes loose then others will follow and then even some broken spokes may appear.
Another issue is people tend to over-tighten their spokes and this can cause them to break as well.
If you are having spoke issues I recommend loosening them all and taking it to a bike shop to have it trued properly.