AI Chat "Credit balance is too low", desktop only

I booted up my macOS app this morning, updated to v0.10.4, and attempted to start an AI chat, but get the reply “Credit balance is too low”. I double-checked and am using the Omi AI (Free) provider. Also, AI chat with Omi on my mobile app (Android v1.0.523) appears to work just fine, no such messages, and the conversation syncs back to the desktop app fine.