So, I don't know much about SEO, but my boss came up with this website: https://moz.com/researchtools/ose/
I know that the Page Authority is a score calculated by this website only. We notice that if we use our full website url - https://www.example.com/ - the Page Authority is 1/100. But if we use - example.com - our page authority is 21/100.
Does anyone knows why does this happen?