Since update to 4.x the Select/Save buttons no longer fit within the UI. It is now impossible to download anything. Several bug reports about this have been posted to the GitHub Issues page in the last month (one report even helpfully contains a code snippet that fixes the problem) but the developer has been ignoring them.
Thanks for your feedback! A fix has been submitted (4.1.1). In case it's not working, you can summit an issue here: https://github.com/puemos/hls-downloader/issues
