Download issues can happen due to multiple possible reasons:

• Your internet service provider is blocking some of the functionality on this domain
  • Possible fix: Use a VPN
• You have any of these enabled: adblocker, tracker blocker, script blocker
  • Possible fix: Disable any blocker that's enabled. With Firefox you have to disable tracking protection.
• Your anti-virus could be blocking some of the functionality on this domain
  • Possible fix: Try disabling your anti-virus for a few minutes and see if that resolves the issue. If that's the case try whitelisting this URL.