Hi, \nI am coding in leetcode from couple of weeks. I noticed mutliple problems and today I\'m stuck, can\'t move forward. I would really appreciate your attention to these problems.  \n\n1) You can\'t switch back to newer version. If there is a way please let me know\n2) when I was coding in newer version, my profile was static and click was not working. I saw an option to go back to older version. Clicked on that (why? I was trying)\n3) When I started coding in older version, \'Run Code\' option is static. First time I submitted my solution, added new test cases. When I tried to re run my code nothing happens. It keeps showing same output. \n4) How can I go back to newer version?

Hi, \nI am coding in leetcode from couple of weeks. I noticed mutliple problems and today I\'m stuck, can\'t move forward. I would really appreciate your attent