The token issue is a very rare issue which some of our users can be experiencing this. Actually, the issue is on the Twitter side.
If you get the below pop-up repeatedly while you are using Circleboom app, you may get rid of it by following these instructions.
"Somehow your Twitter token is expired or invalidated this happens when you changed something on Twitter or You've been idle too long. Please log-in again to fix this"
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.
After seeing Circleboom Apps on your Twitter App List, please revoke Circleboom app's permissions and remove it from your Twitter account.
Please give your Circleboom account a rest, at least a couple hours after revoking Circleboom’s permissions to try again. Do not use your Circleboom account for a couple hours.
“Waiting a couple hours", let's say 12 hours at min, is important. Most probably the Twitter servers releasing your token within that period.
After waiting a couple hours, log in your Circleboom account to see if it is working.
If the issue is still there, please repeat the steps again, and wait at least 24 hours on Step 3.