Help! (Smelting problem)

I have added bunch of plugins into my server and now my server cannot smelt stuff. (You can access the furnace, add fuel and the item to smelt, but the process does not start.)
From this list of plugins, one of this (or even more than one) is affecting my server and I don't know. Please help!

Plugins are not responsible for this. Its a pocket mine bug. You cannot fix this, Wait until pocket mine fixes it.

The reason I know it is because it used to work. You put item to smelt and fuel then the furnace started. However, as soon as I put the plugins into the server, it stopped.

No, pocketmine builds break things some times. plugins have nothing to do with a furnace and there not allowed to edit pocketmine code.

Its a pocketmine problem.

Pretty sure this happened to my other server...
(It happened multiple times)

Can €conomy$ shop plugin might be able to replace smelting?

Well if you want to work out whats doing it remove all plugins and add them one by one.

It is pocketmine bug.

Well I don't think it will work for me because:
1. I have no access to the file and plugins for my server
2. Im lazy
3. I have to conatct the hosting web owner and start all that stuff

... What's the point of having a host like that... sounds like a pretty s**t host to me

Well they had a valid reason.