Footer, Language, SEO

Footer, Language, SEO

1. I am using Polylang to have more than one language page, but I only find an option to put the switcher language on the footer. How can I put it on the main menu?

2. How do I disenable this effect on the footer background picture?
(there is some black transparent filter over the picture)

3. I can find an option to disenable “Developed by ThemeMakers”. How can I do it?

4. I change all color theme but only the button under the portfolio pictures still green. Where is this option?

5. I will SEO by Yoast plugin. Do I have to deactivate the theme SEO mode? Is there something like that?