As airlines are in the race to ground most if not all of their flights for an extended period, now it would be the right time to consider what paid subscriptions are needed.
There are many services that we frequent travelers use and pay for that are worth the money when traveling, such as ExpertFLyer, Gogo, and TripIt. There is no much use for them when you are grounded, however.
I believe that TripIt was offering six months free extensions for their paid members from the emails that I have seen. I don’t think that there is anything similar from Gogo or ExpertFlyer.