Could you do me a favor and:
- Connect your Playdate to your computer
- Go to Settings -> System -> Reboot to Data Disk
- On your computer, navigate to Data/com.scenicroute.rainbows/ and mail the file named "achievements.json" to me at scenicroutegames@gmail.com?
Also - are you on v1.1.0 or v1.1.1? The version number is displayed above the fireplace mantle on the "Credits" view.