I have 2 issues:

1. Once I have installed the theme (by ftp), and activate all the plugin, I get this 2 notification which are the

a. Redux Framework Notice: There are references to the Redux Framework support site in your config’s admin_bar_links argument. This is sample data. Please change or remove this data before shipping your product.

b. Redux Framework Notice: There are references to the Redux Framework support site in your config’s share_icons argument. This is sample data. Please change or remove this data before shipping your product.

What is it and how it could affect my web? and How to solve this?

2. Second issue is the importing data. It seems taking very long time to import. Always hang at 50% (which is the All contents)

Please advise soonest.
Thank you.