Removing Key Authentication From a Program

I have an windows application which requires a key to unlock or load it contents and it checks the key if it’s registered in its server I just want to remove key authentication, Any suggestions or help will be appreciated. The prices of their cheats are so high like $150+ for a month

Software link: https://sinkicheats.com/forum/7-download-sinki-v1026/

Your request for help applies to paid requests.

Therefore, the topic closes.