I need to EXPORT my chats from GROUPME App

So I did some research and I found out a way to extract full transcripts from GroupMe, as I want to be able to export the transcripts and then delete them entirely.

The solution has been found here: https://github.com/cdzombak/groupme-tools

But I'm not savvy enough to actually execute on the idea. Perhaps someone else knows a better idea, but I wanted to see if there was an option in how I could do this so that I can save and share my chats.