ROBLOX cross-server communication help?

I've been searching for a way to make cross-server communication between all servers.

I already know about DataStore, but unfortunately that will not work. All players from all servers will access a global chat and :OnUpdate is just not quick enough to keep up. I would need to use HttpService.

I need a web host where I can edit the text using :PostAsync(), and other servers can get the new chat text using :GetAsync().

I've tried pastebin, but you cannot edit pastebins. Only create and delete. However you can edit gists from github, but that requires using PATCH, while RBX Lua only has GET and POST.

I then tried making my own domain and editing the data with MySQL and phpMyAdmin, but it is incredibly confusing and difficult. Also, dot.tk, the place where you can get domains has suddenly turned into a phishing site and none of it will work.

If there is anything such as web hosting, a way around making gists or whatnot then please let me know. Ty!