Thanks for your question
_ Venus Layer Slider => Fixed
_ Show currency under language => Done
you need setup currency rate . Goto Admin panel > Manage currency > rate . Save & refesh cache
_ Contact Us form on footer name, email, message don’t want to use page.
You can custom footer in Ves Block bulder . Goto Admin > Venustheme > Ves block builder > manage block profile > footer
_ I want to change search, cart, login icons as image. Please help I’m unable to change.
_Mega menu full width background
_Mega menu open on onclick
As you may know, this customization task will take us a little time to finish so an extra fee would be required. View more : http://www.venustheme.com/service/
_ Breadcrumbs not working properly
we are still confused about your problems. It would be quicker to solve this issue if you could explain steps by steps to replicate the problem and provide us some screenshots.
Thanks and have a nice day!