Livechat registratiron form widget language

Description

Hello,
I using new widget of livechat, I have set language to pl, but the registration form is in en language, where can I change this? In the old widget registration form was in pl language. Maybe can I change this in some file? But I think when i’m using snap this will be not posible.
Thank You for reply.

Server Setup Information

  • Version of Rocket.Chat Server: 1.1.3
  • Operating System: Ubuntu 18
  • Deployment Method: snap
  • Number of Running Instances: 1
  • DB Replicaset Oplog:
  • NodeJS Version: v8.11.4
  • MongoDB Version: 3.4.20
  • Proxy: nginx
  • Firewalls involved:

Any additional Information