Try to clear your browser cache or use incognito mode. If it doesn't work then try other browsers like firefox or Brave.
If it still doesn't show try to access it with other devices like a mobile phone or laptop.
If all suggestion above doesn't work flash your miner with the latest version from
https://www.innosilicon.com/html/support_en/download.htmlThen try to access it again let see if it still doesn't work.
I tried all the best practices and contacted Innosilicon support. Unsuccessfully.
I do not know what to do. This way I can't find errors on my hashboards.