can't download plugins through my dashboard, using elegant divi theme, permissions are set.

Hi,
cant download plugins from my dashboard error • Downloading install package from https://premium.wpmudev.org/wdp-un.php?action=install&key=a458b66e23f837b1f6fe7efcf1dec72371a3bb40&pid=1003656…
had this before could you tell me how to access to manually download I can't see a link.