As I mentioned earlier, podcast files are large. Because of this, many podcast hosting plans limit the amount of data you can post each month. How this limit is expressed varies from one host to the next; some limit you to a certain number of episodes, others to a certain number of hours. Others still restrict you to only hosting one show.
If you want full control of how many shows you can create, how many episodes you can post each month, and how long those episodes can be, you’ll want to find a plan that offers unlimited everything.