If you try to access the Skai TV website from the UK, US, or Australia, you will almost certainly hit a wall. The content is licensed only for Greek territories.
Be wary of "Free Streaming" aggregator sites (the ones that promise every episode in HD with no signup). These sites are often riddled with adware, pop-ups that lead to phishing scams, and low-quality video. The "cost" of watching for free on these sites is often paid in your data privacy or the security of your device.
claiming "free episodes" of a Greek version—they're either fake or malicious (malware, scams).