SAN FRANCISCO — As Twitter has tried to draw bright lines between what is acceptable and not acceptable on its platform, it has stumbled over them itself.

The company was criticized after it froze the account of the actress Rose McGowan in October, when she included a phone number in one of her tweets about misconduct by the movie producer Harvey Weinstein. Then, after verifying a white supremacist this month, the company paused the entire verification program and now has new rules: the company can revoke verification for behavior both on and off the platform.

This weekend, Twitter locked The New York Times’s international team account. The account was blocked on Saturday afternoon and unlocked about 24 hours later, on Sunday afternoon.