Ah, yes! I'm so ready to get back into this
Okay, so we know it most likely has something to do with the E = 5OUEHRA? puzzle from last time. E = 5 on it's own just makes it a regular A1Z26 cipher since E is the 5th letter anyway, but hiib heed doesn't mean anything. The OUEHRA? part must be key. Maybe to a keyword cipher? The fact that it's the second letters to the days of the week seems important. I'm not sure if it's relevant at all, but 'Wednesday' is the only day of the week where "E" is the 5th letter. I may be barking up the wrong tree with that one though xD