Please go to your Twitter settings and click
"Apps and devices". Once you get the app list, look for
"Circleboom" in it.
If you couldn't see the Circleboom app on your Twitter Apps list,
Please log-out from Circleboom and Twitter
Log-in again to your Circleboom account
Check the app list until you see the Circleboom on your
Twitter>Settings>Apps List. Sometimes, Twitter might not show the apps in your list. Therefore, proceed this step frequently until you see the Circleboom app in your Twitter Apps List. You will see the Circleboom app soon in your list.
Once you see Circleboom App on your Twitter App List, click "Revoke Access" button to revoke Circleboom app's permissions and remove it from your Twitter account.