Not sure if that’s an “official” Notice to Comply.
It probably wasn’t. A Notice to Comply has to come on a specific form, as issued by Fair Trading, and there has to be a decision at a committee meeting to issue one or it’s not valid (unless it’s issued by the strata manager).
I would let it be known to the committee, probably via a friendly member, that just blindly issuing NTCs to you will have consequences, in that they will ultimately have to go to the Tribunal and prove that your Vegepod is an eyesore – and their success is by no means guaranteed. Quiet diplomacy and ignoring the threats will probably get the job done.