Baseus Bloom Case not working!

[Davood21]

Dear friends,
I have bought a Baseus Bloom Case for my Note 4 (N910C).
As the manual said, I explored pitao.baseus.com downloaded and installed the app.
The problem is when I want to register the app (Bloom Case came with a registration code), the app prompts:
sorry. the key has been used

Please kindly help me to activate the app and enjoy my new Bloom Case.

P.s.
this is a photo of my registration code:

 

[Davood21]

؟?
؟?
؟?

 

[Davood21]

any answers?

 

[MatiasETirimaco]

the key as been used, its an used case i think, whit an used key code

 

[Davood21]

the key as been used, its an used case i think, whit an used key code

You mean the registration code is disposable? It is intended to be used on just one device???

 

[boseus]

Boseus irda aplikacja