This is not a setback, Efforts are being made to contact lander Vikram: ISRO Chief08:40:00 PM, Saturday 7th of September 2019 | in technology
After ISRO releases an official statement, ISRO chief in an interview said the last portion was not executed the right way, in that phase only we lost the link with the lander and could not establish communication subsequently. Orbitar will have 7-year lifetime. We will be able to cover complete surface of Moon using high resolution imaging. Chandrayaan-2 will not affect ongoing activities. We are working on several projects.