SkyBlock Enhanced uses Easy Configs to allow different default configurations for various uses. By default, when you launch the game for the first time, configurations for 1080p screens will be applied. This is important because GUI elements overlap and get misplaced when transitioning from one screen size to another. 

If you are using a 1080p monitor, you don't have to do anything. However, if you are using a 1440p or 4k monitor, you must follow the instructions above on how to use Easy Configs. Then go to the load configs and choose save slot 1 for 1440p or save slot (4k has not been added yet but will be maybe soon) for 4k, then restart your game. If you want to go back to 1080p choose save slot 0. After this, you are ready to enjoy SkyBlock Enhanced!

More info can be found at https://modrinth.com/modpack/skyblock-enhanced also if you need help there are links to that stuff on the mudpack site.
