Here are a few points on Pagadi and assessing if it seems like a legitimate platform for investing USDT:

• Pagadi was launched in 2021 and claims to offer automated crypto trading bots and high yield returns on USDT investments. There is very limited information available about who specifically founded and operates Pagadi.
• Claims of extremely high, consistent returns like 20-30% per month should always raise red flags. These far exceed typical returns in legitimate investments.
• I could not find any evidence of Pagadi being registered as a regulated financial entity. Unregulated platforms carry much higher risk.
• Pagadi promises very vague things like “advantages of collective trading”, but provides few details on their inner workings. Transparency is lacking.
• User reviews are very limited, but some reports of difficulties withdrawing funds have surfaced. Liquidity issues are common with ponzi-type schemes.
• Pagadi exhibits multiple common signs of a potential crypto ponzi scheme rather than a legitimate platform – lack of transparency, no evident regulation, too-good-to-be-true returns promised.

Overall based on currently available information, Pagadi appears very high risk and likely illegitimate. Investing USDT or any crypto into such opaque platforms with huge promised returns could lead to losing your capital. Extreme caution is advised.