Are you using the Itch.io App? In the download section from https://mrcerealguy.itch.io/stonecraft you'll find the file.
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Yes I am using it but it doesn't appear in the app. I copied the link sent on my browser and it does show. There are no signs of crashes, buffers, glitches, and errors.
Ok, in next release, I'll add the file into the setup package and give better information if someone want to connect to a server with the old network protocol.