changed the default config in Skyblockbuilder to generate the normal End Dimension and strongholds. (Big Sorry to everyone for not testing this beforehand)
For the Time Beeing If you want these to generate these in your world but dont want to create a new one follow these steps:
Create a new world
Open up the save folder for your worlds and copy all the whole folder named "regions" into the save folder of the new world, do the same stuff with the "Playerdata" Folder, also copy the "entities" folder.
now Play on the Newly created World.
Understand that I am very sorry for the hassle concerning this whole situation