Proper formation of entity title

[xpb]

I am updating information in relation to my receipt of the inventory of coins and stamps, such that I can fulfill back orders of the same via https://talossa.com/culture/coinsandstamps/

The entity stamps@talossa.com identified at PayPal as Talossan Royal Bank & Post
(for reference, merchant ID LZ9F3GQ9Q99EE)

As per https://wiki.talossa.com/Ministry_of_Finance

identified as Royal Bank & Post (Banqeu es Post Rexhital) and

As per https://wiki.talossa.com/Royal_Bank_%26_Post

Identified as The Royal Bank & Post (El Banqeu es Post Rexhital)

Is it more proper to say on correspondence in El Glheþ

Banqeu es Post Rexhital Talossa
or
Talossa Banqeu es Post Rexhital
or
use Talossan Banqeu es Post Rexhital or Banqeu es Post Rexhital Talossan

?

[Marcel Eðo Pairescu Tafial, UrGP]

I'd use Banqeu es Post Rexhital Talossan.

[þerxh Sant-Enogat]

I'd use Banqeu es Post Rexhital Talossan.

In this case, shouldn't we use the plural form of the adjectives ' Rexhitals Talossaes' , as in French for instance ?

[Marcel Eðo Pairescu Tafial, UrGP]

In this case, shouldn't we use the plural form of the adjectives ' Rexhitals Talossaes' , as in French for instance ?

I view "Bank and Post" as one single entity, as such the adjectives would be singular.

(also the plural of "rexhital" is "rexhitais".)

[þerxh Sant-Enogat]

In this case, shouldn't we use the plural form of the adjectives ' Rexhitals Talossaes' , as in French for instance ?

I view "Bank and Post" as one single entity, as such the adjectives would be singular.

(also the plural of "rexhital" is "rexhitais".)

Exact ! Thanks