Every student, every semester, begins with a hold on their LionPATH account that prevents the student from being eligible to register. The holds are administrative, and they are easy to fix.
Prior to registration, a student must accept a Financial Responsibility Agreement, and read through and complete a Pre-Registration Activity Guide. The University Registrar has help documentation about these tasks at this page under the heading Complete the Pre-Registration Activity Guide and sign the Financial Responsibility Agreement. Alternatively, you may click the image on the right to be taken to the video tutorial for the Activity Guide.
Clearing those two holds should then allow you to register. If you are still unable to register after clearing those holds, the most direct path to resolution is calling the World Campus Student Support group at 1-800-252-3592.