Monstar has not released any official statement on this matter yet.
Back in March 2017, Vpop boy group Monstar had a change in membership when Doan The Lan (nickname Grey D) replaced Erik in the lead role of the group. Doan The Lan has been widely known through the contest “Sing My Song – Best Song” and made a good impression because of his ability to sing, compose and play musical instruments. During nearly the past two years, the singer also attracted a huge fan following.
Until recently, The Lan suddenly posted on the personal status page: “In the near future, Lan will suspend all activities for a while. I still can’t reply to all unread messages., please understand my current situation. See you all soon .”