Below reasons prevent Circleboom to show the last tweet date of Twitter accounts.
If Twitter accounts are protected then, nobody can reach the accounts’ tweets. We label those accounts’ last Tweet date as a “No info” on Grid.
Accounts have never tweeted
Accounts deleted all their tweets.
Circleboom robots regularly check and renew all cached data in our servers and update last tweets' date regularly. Like all other data, profile cache system has its own limitation either by design or by Twitter rules. We do our best to refresh our database every 10 days. During that 10 days waiting period, some of the Twitter accounts remain not updated. Most likely these kind of accounts going to be updated soon. During this short time gap we label those accounts with a “no info” label on the grid.