Hi ,
I tried to download nRF Command Line Tools for linux 64 bit from your server today (01.22.2020). Even though I chose linux 64bit operating system, clicking on link starts downloading nRF-Command-Line-Tools_10_5_0_Installer.exe, which is windows installer. Is there a problem with your web app or is nRF-Command-Line-Tools_10_5_0_Installer.exe actually installer for linux.
best regards
Boštjan Mikelj