Can’t install gravityforms extension

Hello,

I’m trying to install the gravityforms plugin and I can’t seem to have acces to it, althoug I have a affiliate entreprise version.
I’ve installed the itthinx update plugin.

When go on the affiliate integration page on my wp admin I see “Affiliates Gravity forms intagration plugin is not installed”‘. I click on install but I get an error : “Une erreur inattendue s’est produite. Quelque chose semble ne pas fonctionner avec WordPress.org ou la configuration de ce serveur. Si vous continuez à rencontrer des problèmes, veuillez essayer les forums de support”

Then I click on the link “Affiliate Gravity Forms” and I see “you need to purchease the Pro version”… I’ve aleady bought the Enterprise version !! Does this means I need to buy the other one too ????

Can you send me my plugin so I can set this up ?

Thanks

Can someone