It’s hard to pinpoint the exact site without more details, but as others have mentioned, most "web mining" or cloud mining sites during that time were likely scams or extremely inefficient. If you didn’t control the private keys or own the hardware, it’s almost certain that any mined BTC was either minimal or inaccessible now.

The lesson here is to always prioritize control over your assets. "Not your keys, not your coins" still applies. It’s worth looking into reputable mining pools or projects if you’re still interested in mining today, but be cautious and research thoroughl