The usual deal is to just wait a bit more, until your bridge gets voted into the last consensus. The "running: true/false" field in Onionoo simply indicates whether your bridge/relay descriptor is listed in the last consensus (which is published every hour, and includes a list of relays and bridges which the network authorities agreed on being valid / etc. for client usage.) It usually takes some time (e.g. more than an hour) even after your bridge/relay is successfully running. At least that's my (perhaps oversimplifying) take.