I'm just going to bring this out as a general tip: we all come from different cultures, and we speak different languages, yet we have to share this space in English (for the most part).
It's worth remembering that what you say isn't always what other people will hear. English is generally low context language, which means that you may need to write out a lot of things you'd think is obvious.
Take your time with each other when communicating. Listen, show that you're listening in your response