Hi,
Thanks for giving your time to watch on that problem. I just fixed it by manually adding the widgets to active sidebars again.
I don’t know the exact reason why it was happening exactly but it look when I am doing any plugin or theme update or try to customize, it inactive the sidebars.
I just updated the theme version to 1.1, and not found it broken so hoping that it may be fixed by devs.
Thanks & Regards,
Linux Explore