NSW Notice to Vacate Because of Small Tibetan Wind-bell?

[kate bird]

I am a war veteran in good health approaching my 90th year.

I have a delightful small Tibetan wind-bell (4cm diameter) which has hung, harmoniously, on my balcony for 20 years:

I have recently received notice to vacate my residence unless I remove it:

What is going on here?

 

[Tim W]

Are you a tenant or an owner?
If a tenant, is there a lease document?

From whom did you receive the notice?