Thank you @maze that was a good idea to troubleshot. Unfortunately it didn’t work. I took a screenshot of my mobile phone (then emailed myself the image) so you can see below:
I clicked ‘save’ and when previewed it was the usual blank page. I’m going to test other services because, to be frank, I have been struggling for weeks with BDK, it never worked and the website is confusing. I really appreciate your help though. I am listing the different ‘website-to-app’ services on this page.