Firstly thank you for the kind and fast answer. I don't know how comes I haven't checked before writing this post but I'm sure I read somewhere that in order to install these plugin you had to get an custom installer (the file i've installed) where you can manage, licence and see all the plugins (something like "Waves Central" does).
So, to correct my post. The installation went just fine except Protools saying that these are invalid 64bit AAX plugins as shown on the screenshot. Any ideas to get a fix? (Works fine in Logic X)
Hey @emmrecs, yes indeed Avid are quite a pain when it comes to hardware but software is fine. I have tons of plugins that all work just fine so I suppose it a bug coming from the AAX plugin file itself (since VST and other work). So I hope someone from their team could check it out and see if it could be fixed :)