So from my reading, what they log is what IP you use to connect to their VPN in order to be able to investigate fraud/abuse and such logs are stored for 90 days. Other than that, they only log additional info if you turn on additional features. They do not log what you visit.
Note that your ISP also can see the fact that your device is connecting to a FreeDOME VPN endpoint....
Overall this seems okay for my VPN use cases but it all depends on what your concerns are.