My Invitation came in the email body, the attachment is a 3-page word document for "consent" to do the interview virtually. No PDFs attached!Your invitation PDF only had 2 pages? Because mine had 4, the last 2 pages were the request letter with the translation instructions.
Your case seems unusual. IMO, these are the pains of a pilot program. Sometimes even the officers themselves are not consistent.
You have the right idea by getting the translations done for peace of mind. Or email your officer for clarification, perhaps.
The email body mentions that Before attending this event, you are also required to submit your documents as instructed in the NOTICE TO APPLICANT - REQUEST FOR SUPPLEMENTARY EVIDENCE form sent with this invitation.[If applicable] which in my case it's not applicable, I have no other attachments.
I have already gone ahead and emailed my case officer. I am just clarifying my invite situation for others who might be going through something similar.
Thanks