why clenix theme header is not working for mobile header?

I’ve been struggling with header settings on mobile for the past two days. Header is working ok on desktop but on mobile is not working properly so please solve my issue
www.swiftfixtech.com

Hi @bharat1996,

Please contact the author of your purchased theme, the author will assist you.

How to contact an author to get support or for any technical query:

Thanks

Hii Dear,

I am here first time so I don’t know how to contact with them and I was trying by Envato help centre but it’s not working properly so please help me for that solution

Authors support Support for Clenix - Cleaning Services WordPress Theme