Hello,
My name is damanpreet singh. I am currently running my own website finexo.co.uk. I want to ask question before making a purchase
is Installing a new theme impacts the seo of my website
No there will be no any impact on the SEO while using our theme. Our themes are SEO friendly, However if you need advance SEO features you are free to use any SEO plugins. Are you using any SEO plugins into your site or not?
If your new installation impacts the SEO of your site you can revert back to same theme as well.