ABC Legal does not receive unlimited jobs to assign. If you are the Primary process server committed to a zip code and not receiving new work, the reason is likely that we don't have anything for you at the moment. The market is limited to the scope of supply and demand - we can only give you as much as we get!
Keep an eye on your manage areas tab in ABC Mobile. If a zip code is available to claim as a Primary assignment, look into it. Decide if the jobs/month and distance from your other areas are in line with your desires for workload and travel time. If it looks good to you, claim the area as a Primary! You will then be automatically dispatched new jobs coming into your area - up until you hit your active services limit.
Keep an eye out. Primary areas may eventually become available for you to grab. The hard truth is that, in the meantime, you may not get a lot of assignments.