Then, as you would with any product, follow the instructions. Good things take time. And even then, nothing may happen. What is important in today's culture of death is that you not remain passive and that you use every legitimate means to find a spouse who shares totally your Catholic faith, particularly in all that relates to the Church's teaching on marriage and family. God may throw some person in your path unexpectedly, not through Ave Maria SCOL, because He sees you are serious about getting married and using all the means possible.
Many people are skeptical about long distance relationships.
Of course they can. They have for centuries. Obviously the couple will have to move near one another if not before then certainly after the wedding. All of this is certainly much less expensive, and takes up a lot less time, than traditional courtship. The notion of using an online service to meet your future spouse prompts giggles and scoffs.