Thanks so much for the quick response!
I have finished rewriting and saving ea3-config.xml and bootstrap.xml.
I'm really sorry for the rudimentary question.
I tried to find out how to patch the dll but I couldn't figure it out. I would appreciate it if you could tell me.
The support page says that I can get support by joining the discord server, but I couldn't join the server, so I had no other way but to ask here.