App can be found again on the Google Play Store if VPN'ing to Europe or other locations outside of North America. Still available as an .apk off the Mullvad website or through F-Droid.
I hate geo-locked apps. There are some apps I bought years ago which have since geo-locked their app and it's only available in Asia. No way to re-download this app, and seemingly no way to spoof my geolocation in Play Store or Apple's App Store, as in, using a VPN to tunnel to Asia and grab the app. The stores assign you a country based on the IP you registered with, in my case a European IP.