So i tried buying cerberus but wouldn't let me so i went to orbit and back and now it became riskrunner.
Hello, Thank you for your report. Due to the recent transition to Pacific Standard Time, Xûr’s inventory partially reset at the old daily reset time of 10 AM. We are investigating this issue for future weeks. In the meantime players should expect that Xûr will continue to offer Riskrunner, Transversive Steps, Fr0st-EE5, and Eternal Warrior this week.