You didn't had Bepinex log because Bepinex works only when client is on, you just haven't even reached that for logs to generate.
Same with client one actually - you can run the EFT.exe, but it won't give useful info, to get client logs you need to run the game appropriate way.
The issue is defo your PC settings, whether you need to run applications in admin mode, or tinker around with your internal networking - sadly I help hence can't recall how exactly I was handling such issues.
Thank for your assistance so far. I really appreicate it. I will try admin mode as you recommend. Does anyone else had similar problems as me in the past?