Ctrl + F4/F5 on Huntsman Mini

Dear Razer Support, I have tried to reach out to you via chat, I have spoken to Alfred and explained him my issue. He mentioned that the case would be escalated with high priority but I got disconnected from the chat. Could you please inform how to perform the Close tab (Ctrl + F4) or Hard Refresh tab (Ctrl + F5) in the Huntsman Mini? Such actions should be executed by pressing Ctrl + Fn + 4 or 5, as it works with the Alt + Fn, but it does nothing. I have searched the internet and found only one post on reddit about it, which is unresolved: https://www.reddit.com/r/razer/comments/i7y150/huntsman_mini_ctrl_f5/ I have loved the keyboard and do not wish to return it, but this is an extremely important input for anyone who works with several tabs in the browser. I cannot believe that Razer did not design the keyboard to have it. All other 60% keyboards from any brand have it. Looking forward to hear from you. Thanks.