Woffice Theme - Google plus API expires soon


We are using Woffice theme which uses Google OAuth Authentication using Google Plus API which is fully deprecated now and going to completely shut down in a month. Google has announced that Google plus API will be shut down from 7th of March 2019.
We want to find out if we could expect an update release soon with the replacement for Google plus API. Or alternatively, could you please advise what other options we could try for resolving this issue?

Many thanks,