Hi Juman! When someone is being "off with you", it means that someone is not happy / not pleased with another person. The person may be silent and moody or only grunt a reply whenever the other person tries to talk to them. It is usually because the person is angry about something the other person has said or done. Other English idioms that have similar meanings are "to give someone the cold shoulder" and "to send someone to Coventry". I hope this answer helps you.

it means that they are not pleased with you. The word "off" isn't used exclusively to refer to lights or devices like computers or phones (eg: Her phone was off so we couldn't call her.) but also ir may refer to people or situations. Here are some examples: - Something felt off when he walked through that street. - They visited their grandma like every Sunday, but something was off this time. - Linda tried to speak to me, but I was feeling off because she had lied to me.

I am a native English speaker (US) and would not understand that sentence.

It has two meanings, the first one is that someone is going with you, like saying "Im off to see a movie" like you're going to see a movie and the second one is that someone isnt pleased with you, they have a problem with you