I have created a Vanilla Plus type modpack for 1.14.4. I am using Forge 28.1.20 which unless I am wrong is newer than the required minimum of 28.0.45 The problem is, there is no config file being generated on the client, and when using a tool the tool was allowed to break with no message about durability remaining. The tool in question was a wooden sword. Is this mod only suppose to affect the Pickaxe, Shovel, and Hoe, or should it also preserve the Sword as well? I tried it in single player with a shovel and it worked as expected.

Attached are screen shots of the mods and configs on the client

Testing in multiplayer with a pickaxe confirms it does work in SMP on tools as well, just not weapons/sword.

Hmm it should work on swords, but only if you use them against blocks. I don't have any handling for attempting to use an item to attack mobs. I don't even know if that's easily doable, but I'll check.