Thanks for reaching out to us! I’m very sorry for the inconvenience – this is an issue that we’re aware of that seems to randomly affect a small group of users. We have isolated the issue and are going to release a new version very soon. When ready, the app will automatically update. In the meantime it’s possible to work around the problem by using our Flash version at https://ribbet.com/app. We expect the new program version to be available within about a fortnight.
Sorry again for any inconvenience caused and if you have any further issues or questions, please let us know.