Minecraft version: 1.16.5
Forge version: 36.1.65
Environment: Singleplayer

Mod name: Infinite Trading
Mod version: 1.5

Description

when I try to use the mod, it doesn't work, it's still locking the trade

Can you try enabling cheats ("Open to LAN" -> "Enable Cheats: On") and running the command /data get entity @e[type=villager, limit=1, sort=nearest]? Post the resulting output here.

This has been fixed in version 1.9 of Infinite Trading. Thanks for submitting the bug report!

https://www.curseforge.com/minecraft/mc-mods/infinite-trading/files/all