You have downloaded many episodes and now would like to create some free space in your mobile device by removing some episodes. To do that, follow these steps:
Step 1: Go to download tab in the app
Step 2: Tap on the delete button on the top right corner of the page.
Step 3: Select the episode(s) that you wish to delete.
Step 4: Tap again on the delete button on top right corner. All selected episodes are deleted.
Delete feature is irreversible - that is, you can't recover the deleted file but you can download the episode again.