So my unifi modem wifi symbol (earth symbol) has been blinking blue light for two days now. Usually it's just yellow like all the other lights. The connection seems fine but I'm trying to find out what the blue light means. Couldn't google it so I tried to use their live chat but the service agent didn't know how to answer me (unbelievable).

Does anyone know if something's wrong with my modem?

If Google can't answer you, you won't find answer you want here. I suggest you at least put a photo or video to explain your situation.