Does Okomo have an impact on my website's search engine optimization (SEO)?

No. Since Okomo is programmed in a very lean and efficient way, loading the Okomo button on your website will not delay the overall loading time, and therefore will not have a noticeable impact on your SEO performance. 

Moreover, the data needed to use Okomo is only loaded when a website visitor clicks on the Okomo button, so it does not affect the loading time of your website.