After the LoL smurf accounts Discord conversation went south, the Chronoshift devs were contacted by a law firm focusing on Riot's behalf (page 1, page 2).
The note from Chronoshift's founders had expressed their disappointment in the job being shut down. "To our best knowledge, and the assessment of the attorneys specialized in IT copyright we spoke the project over with, we haven't done anything illegal. We never distributed any copyrighted material – all old game files may still be directly downloaded from Riot's CDN. Chronoshift hasn't interacted with all the live game, or reside game accounts, at all, shape or form."
It's obviously not uncommon for fan projects to be shut down by big businesses aiming to protect their IP. In 2016 and 2017, Blizzard similarly shut down World Of Warcraft legacy servers, even with Blizzard later stating that there was"no clear legal route to protect Blizzard's IP and grant an operating license to a pirate server" They also naturally established World Of Warcraft Classic themselves in 2019.
Riot last commented on the notion of making a"Classic Mode" for League Of Legends four years back, concluding that it would be difficult and"that there is a good chance it's not worth the development effort it would take."
Riot tried to take down a League of Legends fan project in the worst way possible
Riot Games is threatening League of Legends enthusiast project Chronoshift with legal action over its attempt at a legacy server for the sport. That's after Riot reportedly sent among its security staff, known as Zed, after Chronoshift's developer, in buy LoL accounts a market which was leaked online and moved viral on social networking.