After using Azshara's Font of Power trinket, I need to wait for the cooldown Corrupted Aspirant's Badge and only after that use Combustion and burst rotation.

Fill out the ticket properly, thanks.

Sorry, but I do not know much English, so it’s hard for me to fill out the ticket properly.

Both Azshara's Font of Power and Corrupted Aspirant's Badge should be accounted for in the priority. If you're not seeing that, you'd need to complete a ticket with the details required by the ticket instructions.