This is Obsidian Pillow. Welcome and enjoy.
~No banned items
You need Twilight Forest 1.15.3 which is not the current version. Just download this version (Google it) and on the main screen of the FTB Launcher, click "Edit Mod Pack" and then click "Add Mods" and browse for the .zip or .rar or whatever other file type, but be sure to leave it compressed. Enable that and disable the default Twilight Forest. Sorry if this is a hassle. We are trying to work it out.