I didn't see any information about refund to investors. For a loong time i do not following the information about this project since the team of Athero's gone and not active on the telegram group.
This is their previous post that said if investor funds have been returned
https://bitcointalk.org/index.php?topic=5036025.msg52035370#msg52035370 but here there are still many who do not believe about it, and are still tracking the refund