One of the most common reasons why your Aol mobile app working is because it may be having some sort of problem with it. For example, if you have an Aol subscription, this subscription may be tied up and not able to work properly. There are other reasons why your Aol mobile app not working as well as you would like it to. Many times, people run into problems with their software programs that are related to memory, compatibility, or errors. One of the best ways to address these problems is to use a program called a registry cleaner.