Problem with Course Dictionary

Hi everyone

I’m trying to make my own Japanese course using the lessons from this old textbook I got but I’m having trouble with the memrise dictionary.

There are words that I can’t find in the dictionary and I can’t add my own hiragana or kanji to the editing database. I tried emailing memrise like the site instructs you to but that did literally nothing at all just gave me an automated message.

do you guys know how to get around this?