The search function is not working as shown in the screenshots. I had basalt bricks in my inventory and when I searched for it, nothing showed up. This happens for anything searched for.

Minecraft version & Mod Version:
Minecraft: 1.16.3
Mod version: 1.16.2-1.1.0

Single player or Server: Server

Thanks for reporting. 1.1.1 has a fix https://www.curseforge.com/minecraft/mc-mods/simple-storage-network/files/3060930