I know I can't access Orbsydia from my phone's browser, but I'm not sure of the reasoning behind it.
With regards to map-making, I think you will find that you will need to use a combination of all of the tools in order to make a map successfully. This is because there have been so many changes to both Runuo and the client and most tools were created to work with past versions of both. So, while one program will extract your map, you'll have to use a completely different program to render the map, for instance.
Also, the first thing you will need to know is that earlier this year, the client switched to using uop files and I don't know of any program that currently works with them. So, you will need to find a slightly older client...7.0.2.2 or something is what I think I use (sorry, not at home, am in my phone so can't check that).
Anyway, UOL and Dragon are pretty similar utitilities. I am not sure why one is favored over the other, tbh, but I found someone familiar with UOL to help me, which caused that to be the program I was introduced to.
To get started using UOL, you will have to navigate to the UOL folder and run:
NewMapImage.exe
Project Name: SaferaRocks (rofl, j/k, make it whatever u want)
Select Map Size: Mondain's Legacy (896x512)
Default Terrain: Deep Water
Check: Dungeon Area
Leave Terrain.bmp and Altitude.bmp or rename, up to you.
UOL will save your bitmaps into a folder named whatever you named your project name.
Now, you take the base Terrrain.bmp and open it in Photoshop/Gimp/Paint.net or whatever graphics program you use.
In Photoshop, you have to load the color palette provided with UOL: Terrain.aco into Photoshop so that you only paint with those colors. Each color is assigned a basic land type in UOL, which is why you have to paint with these specific colors. Handily, the colors are titled in Photoshop with their respective land types. For instance, grass is green (rgb#006400) and deep water is blue (rgb#000082).
Now, paint a basic shape with the grass color and save your Terrain.bmp. (I suggest renaming it and saving often by the way so that you don't have to recreate your base Terrain.bmp all over again).
Now that you have a basic island drawn on Terrain.bmp, go to your UOL folder and open:
AltImagePrep.exe
UOL will attempt to auto-create a new Altitude image for you based upon your Terrain.bmp.
Next, in your UOL folder, run:
UOMapMake.exe
Load the path to your newly made Terrain.bmp and your new Altitude.bmp (made using AltImagePrep.exe).
Choose Random Static On (to have UOL created vegetation, etc based upon your land types).
Click: Make UO Map
Now, UOL will make your map.mul and statics.mul and your staidx.mul files. (Don't forget to rename them to include your map numbers eg map0.mul, statics0.mul, staidx0.mul). And then just drag and drop them into your UO client directory.
So, that is the basic jist, but you will find that there are so many finesses necessary to actually create nice looking maps, but a lot of that will come from practice and asking for help in the forums.
Good luck!