I just got the same email and this would have been for my last trip as I have returned now . I’m not planning on submitting my new application until this week so it is a total scam
I used AXA from England and the first page didn’t state I was covered for £20m including Covid. Emailed AXA and they provided a one page summary and uploaded and no problems.
done the test at bung Lamung hospital and 5 days late. Not that long but the notification to upload never appeared. I thought once you received it via Line that was it. Might have surprised a few people.
I was late submitting as didn’t see the notification until I opened up the notifications and saw they had been messaging daily. Submitted Kat night and nothing back so far.