Didi’s struggles in the bike-rental market led to a launch of its own brand, Qingju.
So far, more than 1,000 user accounts have been frozen for periods of time ranging from five to 90 days.
The rules went into effect on Wednesday on Didi’s bike-rental platforms Qingju and Bluegogo.
The news of ofo’s E2-2 round comes amid rumors of acquisition by Didi Chuxing.
Cash-strapped Ofo could try wheeling its business down another path.