Hi, How can I use this mod in the game? I have the 1.33.* version and this mod, with no other mods. However, I cannot see the custom continents in the game. Is there something else I need to do?

So first make sure the mod is really turned on, maybe you have a different active playset? Then check you turned RNW generation on, and when generating the continents the new ones should appear, although since I've not deleted the old tiles those can still appear. If you try that and no new tile appears then maybe there's a problem with the mod folder, check if the folder is not empty or something in the EU4 mod folder, and if it is then redownload it. If that doesn't work then I can send you a direct download link for it.