Read the first page where RickyFS says this:
FileServe is running a zero-tolerance campaign against people who decides to share their account details whether this was intended or not.
Account sharing is a violation of FileServe's Terms & Conditions and will result in a Downgrade OR a Permanent Ban depending on severity. We do not care if you shared your account with your little brother/sister, friend from 100 miles away nor your great granddad in the mountains of Norway; sharing CAN have consequences for your account.
We advice that you do not give out your password, use third party software nor use untrusted service providers. Please keep your password safely secured. We will not unban users who are caught abusing our system, whether it was intended or not.
We will downgrade or stop accounts without prior notice. It is your duty to change your password regularly and have one that is strong enough to resist easy bruteforcing (this means no 123456, qazwsx, your username [etc].)
Hint: Change your password as frequently as every 3 days if you want to stay on top of any issues.
Jdownloader is a third party software...ops, you don't know, do you? You can use ONLY their fantastic program fileserve manager :D