YeetDL's connection can be blocked by your antivirus or firewall. Make sure to add YeetDL to your firewall's list of allowed programs. If the issue persists, try switching your Antivirus and/or Firewall off and try using YeetDL again.
As a final solution you can uninstall YeetDL. Run a registry cleaner program and reinstall YeetDL.
Converting and Playing videos
Additionally, if you are a Premium User, you can choose to have the subtitles embedded in the downloaded video!