Hello,

I see in the invoice configuration there is a sentence: "You can enclose language strings by square brackets to be translated, and even specify language file which have to be loaded (e.g.[com_content:Article])."
Can you please elaborate on this?
I have a site in Russian language set as default, but now the customer needs invoices sent only in English which is not my default fallback language and the setting under Page appearance does not help me in this scenario ... I am wondering whether the above mentioned method can help me out and I can maybe override the invoice strings manually under Invoice Template configuration so that ex. {supplements_en-GB} would bring up the English translation, or smt similar ...?

Please advise and thank you in advance.

Hello,

this is possible in these conditions:

1. you have to set it in Booking & Reservations Invoice: Global Configuration/Page Appearance/Use Customer Language/Yes

2. customer has set default language in his user account

Yes I understand that and have seen the setting - the problem however is not the invoice sent to client, but the automatic invoice sent to administrator email. Is it possible somehow override it to some language other than default site language / customer front end chosen language.
The goal is to have admin invoice in English always. The client invoice however is not that important, it can be whatever the client chooses or default site lang. etc.
Thank you in advance.

Hello. This seems like interesting feature. We will include it in next release as setting in Invoice E-mails tab.