If you disable the built-in login handler, then you have to write your own login handler in order to get automatically logged in again.
You disable it by launching the client through CMD/Terminal like this
java -jar OSBot.jar -allow norandoms
Hello, new to OSBot and OSRS-botting; not new to scripting and programming.
We've been using the same mule for 2 weeks at this point, and it ain't banned. You can do bot -> mule -> upper mule if you really want to be safe tho.