Decay and the PVE server
Guys, need a little insight here.

I run a PVE server and use these plugins to make it that way : 

TruePVE
Prevent Looting

I also have the No Decay plugin, with decay turned off for everything EXCEPT twig in the config, that is set to decay at 1.5x the normal rate. However, twig structures and structures with NO building cupboard remain standing for the duration of the wipe!

Does anyone know of a way to make this behave as it's supposed to and decay these buildings?
Well the no decay plugin states:

The default configuration does NOT affect Twig decay but nullifies all damage on all other items.

So it's not meant to get rid of those structures man.
I use a auto cleaner its pretty simple little plugin every set ammount of time i set it for it will delete any items i put into its config, keeps the maps clean and servers smooth.

I can recomend you might look into this plugin on umod to fix your decay issues: https://umod.org/plugins/auto-decay

"The default configuration does NOT affect Twig decay but nullifies all damage on all other items."

Read that sentence again. Twig still decay's but it stops decay on everything else.

I'll check that other plugin out. Thanks. 

I took that sentence to mean:
it doesnt touch the default twig decay, so to me it says its not that plugin causing your particular issue, but maybe even server.config decay status or some other plugin, however i do think a full decay plugin would cover you.

GG