I am running a neoforge 21.1.169 server on debian 12. The angelring.json5 is not placed inside the config folder. Instead its name is ".\config\angelring.json5" which is placed in the root folder of the server. This is probably due to the windows specific use of "\".

I am using Angel Ring 3 v3.0.0+beta.2 for MC 1.21.1.

Thanks for the report, my bad. I'll look into it soon, thanks!

Should be fixed in 3.0.0+beta.3, it should be live in a few minutes, when CF will upload the files on the mod page for anyone. Thank you for patience.