they are UK version of the site... i went to sportsbetio.uk and asked live chat and they said yes sportsbet.io is same
What do you mean same? Clearly they have totally different odds.....and login with the sportsbet.io username and password also does not work on that UK site
Happens at most sites I use where they have same brand and different location. They have different jurisdictions so have different taxes to pay, different costs,,, so the juice is different, if you login where the odds are better that probably means they have lower costs/taxes.
This doesn't mean those 2 sites are the same of course, I'm just pointing out how they can be different.