Can't download plugins after purchasing full subscription

I can't download any more plugins. I downloaded about 5 successfully and now the rest all receive the same ERROR message when I attempt to download and install new plugins. I've already tried uninstalling and reinstalling the WPMUDEV dashboard (twice) and then attempt to re-download/install the plugins. Did not work.

I really need these today for my site, which is why I purchased the subscription. I admit, I am very disappointed because I was relying on this to work today so my site can insert some crucial items that these plugins provide. Here is the error message I receive. It pertains to not having permission or access rights. Please fix:

Downloading install package from…

Download failed. Problem with the SSL CA cert (path? access rights?)