Thank you for your deep interest and comments. First, it is not allowed to put other folder within a folder because the service was created as simple and fast

Thank you for your deep interest and comments. First, it is not allowed to put other folder within a folder because the service was created as simple and fast as possible. If many users ask us to support ‘other folder within a folder’, we will improve it. Focus or Enter key issues will be improved soon. It will take some time to select multiple links at once and move them into a folder, but it will be improved. Thanks again.