As you know, there were major changes on the Lyft side, so we needed to adapt the app to them.
Most of the work is already done, so Android users have started receiving rides; however, the Search performance still needs to be improved.
As it is done, we'll launch the Android app in production (with billing), and the iOS one will follow soon after.
While the fixes are in progress, all rides you receive will be free of charge. That said you can always receive a refund for the credits you purchased in the past here.