Mi bedside lamp2: touch panel not worked

Hello, I just bought mi bedside lamp 2, produced 02/2021, firmware 2.0.6_0033. At first, the touch panel worked fine. After I connected with my iphone through mi home app, the touch panel stop working anymore. But I can still control the lamp through the app? It is very annoying. How can I use the touch panel. Now , I cannot even do the factory restoring because of the malfunctioned touch panel. Please help!!! Thank you.

My id is 1752973075