Hi there,
Thanks for writing in! There was a known bug on v4.3.0. So if you have this version or earlier then you might face this issue. Kindly update the theme manually for now. You can download the installable theme from themeforest or here – https://community.theme.co/dashboard/
You can just place the extracted theme folder x under wp-content/themes/ folder using FTP replacing the old theme folder.
Also please follow the installation video to understand it better – https://community.theme.co/kb/theme-installation/
Hope this helps.
Cheers!