Thousands of Vietnamese online stores to go bankcrupt by Facebook blocking APIFacebook has just blocked API, affecting a large number of Vietnamese online businesses utilising the social network as a trading platform. A large number of online sellers are affected due to Facebook's blocking APIOn March 27, many large fanpages and online services simultaneously announced problems related to applications developed on Facebook and Messenger in Vietnam. Almost none of the relevant apps like Facebook Shop and third party apps using application programming interface (API) collecting user data work. Tung also said that all the websites’ features and apps related to Facebook user data are affected. API currently cannot work in VietnamOn March 26, Facebook announced changes related to APIs and third-party applications to all developers using the Messenger platform.