I'm sure there has been "some" sort of thread with this issue before, though it might not be too easy to recall where it is.
This is an issue, but it's not too easy to solve as it seems.
To cut things short, flourite plains is the biggest, and most centrated map in FH that people both need to pass through, and like to stay in. This cause heavy load on the server, and thus causing people to get bad tokens much easier when trying to connect.
So in the evenings and especially on the weekends, the risk of those bad tokens to happen increase.