Issue Fail2ban uninstall randomly

[Zicane]

Hi, today I noticed that Fail2ban was uninstalled for no reason.
I had to install it again but when it finished, it had the same settings that I choose before it was uninstalled.
It happens very often.
Someone can help me?

Thank You.

 

[Bitpalast]

Does it really uninstall, meaning that the service is removed from the system configuration so that it does not show up in components or on the disk any more (never seen that before, how can that be?) Or is the service deactivated randomly?