To be fair, you can break down 絵文字 as:

    e = 絵 = Picture
    moji = 文字 = Characters

...so you could interpret "emojielog" as "Picture-Character Picture Log".

(...the "Select a Emojie for today" text kinda disproves that this was the intention, though...)

I am aware of the etymology of emoji; I think your interpretation goes well beyond "fair", all the way to "wildly reaching". It also doesn't explain the "emojie" in "a simple emojie journal" unless you want to make a case for "picture-character picture".

Thanks for bringing it up. I will make sure to make the spelling changes :)

or just emoji e-log as emoji electronic log