1) We will buy AE license and install it on our Server and use Nexrender Library.
2) If user requests some modification of videos by our new website(which isn't developed yet), unlike our current buisness, All the modfication will be done automatically using AE script of Nextrender Library.
3) After all modification's done, we will incode the video and send Users the download link. Again this will be done automatically by using Nexrender.
The originall Video creators are using AE license so there's no problem for sure. Our company will buy AE License to use Nexrender Library and change current manual work to auto so there' no problem I guess. But I'm not sure if our customers recieve this kind of automatic service, they will now considered as a AE user thanks to all auto process on ourside thus cause license issue.
(Theoretically it is just changing our manual process to automatic one, so there might be no problem but still not sure about this)
Developer of the Library says it doesn't but we just want to be sure before we develope our site & web service.
Your customers are not AE user. They just input data in some web-interface (non Adobe), which are processed by AE on OUR side (the installation on your server). You need one licence for this. If you plan to set up a render farm, those farmer-computer don't need an individual licence, since they are working in a render mode only.