I don't think it's only you mate. It doesn't work for me as well. I think the bot is no longer functional as it doesn't return any response back when you input a uid. And I don't know if the author might get back in making it functional. It would be better to use @ TryNinja telegram bot instead since his bot is still very functional. I don't know if it's possible for @fillippone to edit his op and leave just the functional bot.
I'm unsure about "Linux" user base but the majority are "Windows" user if I'm correct. So we should go forward with the Windows version in my opinion. Let's see what the others thinks
I think most people would be into windows and less of Linux. Though Linux might be a more secure os but it's more advanced and people are more used to windows os. I've been using window for some time now. But when I have chance to change my system, I'll install the Linux.