Social media | Linkedin Registration/ Login Issue | Advanced Search Button

Hi NooTheme I need to fix the following issues that I encountered to my website- need help to fix it.
I chose elementor for this site - https://jsljobs.com/

1. Linkedin- Problem with LinkedIn registration/ login. It says "Bummer, something went wrong".
2. Social Media- I want all social media (Facebook, Google, Linkedin) to allow or permit it to apply for a job.
3. Advanced Search Button- Need to change color of the "Advanced Search Button" , "Post a Job Button", "Register Button" to color: #007AFF (see Capture2 image for reference)
4. Main Menu (Hover and active) - Related to question #3 how to change the color to: #007AFF (see Capture2 image for reference). Question 3 & 4 already implemented css code sometimes its ok many times it does not.

5. Employer-Account-  there were no other countries available in the drop-down list other than the US. How to add more countries.
6. Advanced Search Button- related to question #5. How can I search for jobs in other countries?
7. Themes - Currently the child theme is active. Why I have different looks when I switch it to parent theme? In child theme, I don't have a top row for social(right side) and contact number(left side) while In parent theme I have these social and contact number on top. How I can add or remove this feature. (see Capture3 image for reference)
8. Additional query: I have the latest version jobmonters parent theme however the child theme is version 1.0 only is that ok?

Thanks looking forward - I hope I can get an answer as soon as possible and in each question