I’m also unable to drag and drop. In my case neither a trackpad nor a real mouse would work. I could click a tetris piece on the bottom to turn on or off that selection, but couldn’t place it by dragging or by one click there and a second click on the board.
Windows 11 PC - it’s not letting me drag & drop or click a piece then click the board to place anything using either Firefox or Chromium (Edge). In the browser’s Developer Tools - Console window it’s showing errors in a non-English language that I can’t read.
