I've had a streak on 18 failed connections to flourite in a row, only because the map was packed with users along with the rest of the server.
A trick from me is that I run into the portal/or connect to the char in that map. Move the cursor around as it loads and you should see it freezing and then become movable again. If it continues to show the loading screen for a few more seconds and you are still able to move the cursor you will most likely face a bad token, and it's just quicker to press esc and do it again, and again, and again, until it simply works.
However, a bad internet connection can make this even harder/worse.