Eye of Awakening - add socket to dragonflight season 4 item that does not already have one. Can be used on helms, bracers, belts, or rings.
I have a T4 tier helmet Stormwing Harrier’s Skullmask 493ilvl with no socket ( Eye of Awakening will not work on it )
Did you happen to get this from Black Temple timewalking prior to putting through the catalyst? If so, unfortunately we haven’t been able to add sockets this whole expac to gear acquired that way 
Was a helmet from the weekly that I used the catalyst on.
I also have a T4 489 belt that the Eye of Awakening will also not work on, its 8/8 so lower ilvl and I figured that was it but I also have a 8/8 476ilvl T4 ring that the Eye of Awakening will work on so im guessing its just broken.
Same problem as OP
T4 tier helmet Stormwing Harrier’s Skullmask 493ilvl with no socket ( Eye of Awakening will not work on it )
Mine also was a helmet from the weekly that I used the catalyst on.
peace
wanna