Won't Open – Baby Sign (ASL) Free - American Sign Language Learning Signs for Kids Review

I got the free version, then upgraded because I thought it was a great ap. I used it for a bit. Though I got the upgrade, getting new vocabulary, the ap otherwise still thinks it's the free version. It says "free" on the icon, and would advertise it's own update. That's a bit annoying. Now though, I haven't been able to open it in months. It immediately crashes. I've been hoping they'd fix the issue, but that's not yet happened.
Review by Meushell on Baby Sign (ASL) Free - American Sign Language Learning Signs for Kids.