@Chris *****
your welcome.
It is quite long winded to explain everything but when you do the uploading sections on the COE. Just have all your required files on your computer so you know where they are.
If you do not have a scanner for your passport photo. Take a good clear photo of the passport page and there are no flash reflection distorting the image and upload on the passport section. If your applying for an actual visa like TR or STV. Also scan the visa as well and upload in the passport section. But in my case I did the visa exemption so no visa was needed.
Section 2 which is attachments for further consideration. Upload your confirmed return eticket. Screenshot the part of the insurance wording to highlight covid cover, the amount of cover and also if it covers you while in Quarantine. As I have a note 10 phone I can use the pen to point this out.
Then the third part which is very important is upload the actual policy summary which has all your details like name, DOB, Medical coverage (lets say $10million which is way above the US$100,000 coverage), the start of the policy and end of the policy.
Then you should have a document which is the full wording of your policy stating your cover which also highlights covid coverage like the screenshot to did for section 2 but this is the full policy which they can read.
It is trial and error. If you complete it and you get a rejection email. It will tell you why.
When I did this my eticket was the issue. So I highlighted every section of the flights and date of departure, flight numbers etcI had which were departing and returning back to the UK. Eg LHR DOH, DOH BKK, BKK DOH, DOH LHR.
Hope this helps.