I opened a new perfect money account and a new exchange account. Will the hacker have access to these accounts?
How would they hack my kucoin account?
Based on what you posted above, maybe he's using a clipboard malware, or a keylogger to monitor your PC (which is even worse).
It might be difficult to remove it completely even if you use anti-malware, so the best thing you can do imo is: update all your supposedly affected accounts from another device (a secure one), backup your data from the infected pc and secure format your storage, run a fresh install of your OS.