The last login by the winning designer is 24 hours ago - being a weekend might just be the reason - his profile will give you the last login timing
https://logotournament.com/logodesigners/night_owlNight owl is a reputed designer there is no cause of concern - the files should be uploaded sooner than later - but i do understand the anxiety, but there is no reason for worry.
You can always contact Admin - but then Admin might take until Monday to respond.
Again I suggest if you can kindly bear with the delay, and assure that you will get the final files ASAP