Hello,
a few minutes ago I uploaded the Slovenian translation in Transifex.
Translated non-admin file:
plg_vmpayment_authorizenet.ini,
plg_vmpayment_authorizenet.sys.ini,
plg_vmpayment_payzen.ini
these plugins are not used in Slovenia, so there is no need for translations.
Thanks for your project.
Best regards