I think someone has access to my account.

Ko-fi Support

What happens if you think suspect someone has gained access to your account or your login details have been compromised? 

The very first thing you should do is login to your account and change your password here

By doing this, Ko-fi automatically terminates all other logged-in sessions, so you can safely continue using Ko-fi.

It's also good practice to change your email account password often, especially if you believe somebody is accessing your online accounts.