The fastest way is to right click the image you want to use, choose to open it in its own tab then copy the address and paste it into the add an image button when you're writing a reply.
Actually, most of the servers already have been merged through the server alliance system! I believe it was GMS's way of merging servers without having to tackle the issue of character limits for people who played in multiple servers.
Hey everyone! I wanted to kickstart this section of the forums off with a trick for everyone that can save you a lot of time and hassle with Gollux. It mostly applies to non-reboot servers, but will still function in Reboot as well.
Getting to Gollux has been quite easy for a long time since he's accessible through the boss queue system, but getting back to the regular world is really the tedious part for those without hyper teleport rocks since you can't use nearest town scrolls. For a very long time I'd walk back through the maze every time I did Gollux, but I found out there's a free alternative! The Maple Guide system is a life-saver and will let you teleport to a different area, more or less of your choosing, where you can then use a nearest town scroll again.
In my own experience since my character is high level I will always teleport to Haven using the Maple Guide system and then dimensional mirror over to Henesys. Infinitely better than navigating that maze!
There's a few ways to interpret what you said here, but I'm going to guess that you mean for the maplestory website through the ranking system?
If so that's actually been a bug since Reboot came out. I'm not sure if the bug's even known about honestly! It's minor enough that I've never worried about it personally.