Membership 2 PRO not installing

Trying to install this plugin and I keep getting errors on this. Here’s the latest error:

Downloading install package from https://premium.wpmudev.org/wdp-un.php?action=install&key=2212f89c1b6e0e19b5ceec564818cee15fb28ac3&pid=1003656…

Unpacking the package…

Installing the plugin…

Destination folder already exists. /home3/ab3620/public_html/wp-content/plugins/membership/

Plugin install failed.

But the first time it said there was a error that would not allow the plugin to install. Let me know thanks!