The RSS Podcast URL is the permanent address for your podcast. It is used by all internet browsers and bots to find and read your web page. Like all addresses, it must be written in the correct way. Because you are allowed to make your own RSS Podcast URL, we need you to make sure the format is followed. 

Lower case alphanumeric URL characters are required. A valid RSS URL allows only lower case letters and numbers (no spaces).  a through z and 0 through 9

Special characters are not allowed in the RSS Podcast URL. These include symbols, spaces, and capital letters.

Keep in mind that in this section you only have to write the generic name of your podcast:

For example if you want a podcast with the name "my awesome podcast" you have to erase the spaces and write in the box: "myawesomepodcast" so that at the end your URL is like