Nox is working again!

"Go to the settings, scroll down to System settings and click on "Date & Time".

Change the year to 2020 then open up NA F/GO, click no when the clear cache pops up. An error message will pop up, press retry and do not exit the app. Use the "Recent Task" button in the bottom right corner and go back to Settings.

Change the year back to 2018 then head straight back to F/GO. Click retry and it should hopefully work."

Upd. The method was tested on the latest version (V_6.2.2.0)