If you want, I can:
The font cache is stored in plugins/ItemsAdder/data/font_data.bin . This file machine-specific. Fix: Delete font_data.bin after moving to a new machine. ItemsAdder will regenerate it on the next startup.
Use a high-availability cloud storage provider like Amazon S3, Backblaze B2, Cloudflare R2, or a dedicated Minecraft resource pack hosting service (like MCPacks).
: Portable furnaces, anvils, smithing tables, or custom-tiered crafting menus accessible via a simple right-click.