Thank you for pointing this out. I knew it would be linked to my account, I was just moving so fast it slipped my mind.
I've created a burner google account to generate an api key. I know this isn't a very long term solution, but with how many people are going to be using this app I don't think it will be much of an issue. If this solution doesn't end up working for this use case, I'll be sure to remove it in the future and rely on the app falling back on Here maps.
In my opinion Google Maps > Here maps any day.
I have deleted the download link for Mod Ver. 1.1 and replaced it with Ver. 1.1.1 with the new included api key.