Questions, bugs, or feature requests — all welcome.
Email scott.pederson@gmail.com and I'll get back to you personally — Queequeg is made by one person, not a support team.
Queequeg syncs through your device's iCloud account. Open the iOS Settings app, tap your name at the top, and make sure you're signed in with iCloud Drive enabled. You can also check sync status any time from Queequeg's Settings tab.
Sync happens in the background and can take a minute or two, especially right after adding a book. Make sure both devices are online and signed into the same iCloud account. Queequeg's Settings tab shows the last successful sync time for troubleshooting.
Go to Settings inside the app and tap "Disconnect iCloud Sync." Your existing books stay on your device.
Email it over — screenshots help a lot if it's a visual issue. Every report gets read.