JSON FILES DISAPPEARING

Hi, wondering if anyone else here is having the following issue. I created a Lottie animation out of AE via Bodymovin', uploaded to Github, used URL of resulting Json file to insert into Lottie player on my website. All works great - for the first few minutes only!! Then, the URL changes on Github (???) and the link breaks. I tested my animation in the desktop Lottie player, works great. So I know it isn't the animation itself. I also know it isn't any weird code interference, because I tested my Json in a new trial site - same problem. I have seen a few people with this same issue posting under a Youtube "How to" video, but no solutions. I also have a ticket in to Github but thought I'd also try here. I don't even care where I host, I just need my hand held as to how to insert code into the Lottie player because I am new and not a coder. So that's how I ended up with Github, I saw a How to and they have a good reputation. Any help, recognition of the problem, alternates, or hacks are very welcome! I'm about to tear my hair out after two weeks of circling around with this.