Umingle Video Function Banned Without Clear Explanation

I have been using the Umingle website from Vietnam and on 26.06 I discovered that my account, especially the video function, had been banned without any clear explanation. Before the ban, I was using the service normally and I did not receive any warning or notification about a violation. After noticing the ban, I sent an email to Umingle asking them to reopen my account and remove the restriction, but I have not received a clear explanation about the reason for this ban. At the moment I still cannot use the video feature or access my account properly, which is causing me a lot of inconvenience. With this complaint, I kindly request Umingle to review my account, explain clearly and in detail the reason why my account or video feature was banned, and, if possible, remove the ban and restore my full access if there has been any misunderstanding or error in the system.