How do I train a second attack wave on clan wars?

[Biff7annen]

Launched my first attack, went back to train another and it won't let me. ♥♥♥?

[Benson822175]

Launched my first attack, went back to train another and it won't let me. ♥♥♥?

system load is huge. lots of ppl cant scout or attack. relax. theres a maintenance break

[littlefish]

I was assuming it would be like any other raid. Maybe just more bugs.