[Theme Horse Support Team]

Hi

1. You have change the Theme to other else so sorry we cannot provide you the solution without investigating the Site Preview.
2. May be the ‘Autoptimized’ Script have affected the Footer Featured Post text color as well.
3. Please check the Social Profile field once, there may me some extra elements which is creating those issue.
and yes you can hide the Breadcrumb in this theme. Please go to ‘Appearance > Customize > Header’ then check ON to ‘Hide Breadcrumbs‘.

Thanks