Dammit, only thing I can think of is that the "Beat" is "Custom Beat (Played by User)" as it should be but other then that nothing is out of order.
I just restarted the Tournament, this time I put A Cappella (No Beat) but since it's a Custom Beat Tournament still play your beat along with you.
@
Aggo @
Seul @
D3FIANCE @
Shodan @
2 Gucci @
YC @
Perplexity @
Erupt @
envoy @
Mech