This LabTrove instance will be upgraded by 09:00 UTC on 25th April 2015 to use OpenID Connect authentication rather than the deprecated OpenID 2.0 authentication protocol.
Any users using a Google ID to log in should be able to do so transparently as if nothing had happened. Although you may be prompted to authorise access to specific credentials from your Google profile.
Users using OpenID's from other providers (such as Yahoo or Microsoft) will no longer be able to login using these accounts. Contact email@example.com if you require help in this case.