Unfortunately RAID 0 does not offer any redundancy. The data is "striped" across the drives and the loss of one drive really means the loss of all the data. RAID 0 decreases the access time for data ( greater speed) at the expense of reliability. Reliability is roughly inversely proportional to the number of members – so a set of two disks is half as reliable as a single disk if one fails. Because the data is striped, even partial recovery is difficult and normally incomplete.
EASUS won't help I'm afraid so you are very likely SOL!
Very nasty of them to use RAID 0 and not warn you about it.
Mac