Before you do anything else, open a new tab or window and go here
https://probatesearch.service.gov.uk/#calendardo your search again and find the correct entry
Have a look at the image for the details to make sure it says Probate not adminstration.
Once you have confirmed there is a probate and a will continue with your purchase.
HMCTS no longer send wills in the post, in approx 5 working days they will send you an email which contains a pdf of the document. You then have 30 days to save that document to your computer before HMCTS delete your application from the system.
If you are still ahving problems then send me the name on a personal message and I will check it for you.