I convinced my friend to try spiral knights and he decided to create his account on my laptop and play on here first to try if he likes it or not. I decided to ask my girlfriend to give it a try to and she said yes as long as i do the technical stuff since she's not good with that. I tried logging onto the account i made for her on here and it says that the computer cannot make more than 2 free accounts. Is there a way to get rid of my friend's account registration or whatever on my laptop? he doesn't play much, but when does it's on his own laptop at his house, so it doesn't really have anything to do with my laptop anymore. my girlfriend doesn't have a laptop in her dorm, she just uses the campus computer to do her work, and i'd like her to play so she can just chill out and enjoy a game. so please let me know if there's a way i can make his registration thingy be gone from this computer so she can start playing.
You can't do anything about it manually since the machine ID is logged on the SK servers to track account movements (its attached to a UID on the OS) for both the creation limit and Mist pool sharing.
However, you can request that OOO clear the registration counters so you can create another on it. You can submit a ticket here https://www.spiralknights.com/support/#mail
If your going to be sharing a system between 2 accounts, its also helpful to purchase at least a minimal amount of CE on one account to upgrade it to "paid" status. Paid accounts get independent mist pools, regardless of where they login, and can sometimes grant special perks (like test server access).