Now there are massive blocking of Twitter accounts.
Most often, block accounts when you to use mass-following. Blocks is forever!
Also do not use hashtags #ICO #Cryptocurrency etc
Be careful!
UPD
Some accounts of my friends that have been blocked marked "forever" are now unlocked
But anyway, I think we need to be careful
I have experienced it now, I can't use my Twitter account to carry out campaign activities. is this caused by the frequent use of the #Cryptocurrency #ICO campaign? I have tried to improve, but I did not succeed.