To access your Crown Convos, login to your account and visit your Dashboard. If you're not immediately taken to your dashboard, you can find it by clicking the gray person icon in the top right corner of your screen and selecting "My Dashboard" from the drop down menu.
Crown Convos will be the first option under your profile photo on mobile. On desktop, it will appear in the gray bar on the left side of your Dashboard.
To hide a Crown Convo you've posted, click the 3 dots on the right corner of the convo and select "Hide from timeline"