Crashing when entering Flourite is a common issue- especially because Flourite is usually the most popular map. When too many players are in the map and it exceeds the limit that it can tolerate then the map won't allow anyone to enter. Thus it results in crashing. My only advice for crashing in that manor would be to be patient and go to another map. If you're character is stuck you can always reset them to Lonely Cave through the User Panel on the Forums. Any other times you crash when already in Flourite is, again, usually because there are too many people in the map. If this doesn't happen in other maps I would suggest keeping to the other maps for a little while(especially during the busiest times on FH). Does this issue occur while in other maps too?