Online services have been down on this game for about 10 days including the weekly events and it is not possible to login to EA Play when starting the game (this doesn't happen on other active games).
I know you are not involved with this game anymore, but could you pass this info on to whoever is responsible for maintenance on Grid Legends @PJTierney please? Thanks.
It might just be the server(s) need rebooting or something to restart the service.
There has been no announcement about the game going offline that i am aware of.
