Safe for ranking seo pages?

Hello. Apparently split testing is risky with regards to SEO depending on how you do it and the technicalities of how its done.

Can you confirm if your plugin is safe for testing ranked SEO pages and let me know some details of why its safe due to how it functions for example, does Google see both versions changing constantly or only the original page or is there a risk of it seeing negative clocking etc.

Just want to make sure I can use this safely and how Google bot is experiencing the test and multiple versions. Is there a guide or any info on this?

Thanks!