Thanks for making this thread. I've also applied to Cambridge's Advanced Diploma in Economics for 2021 entry! So far I've heard nothing back, and my application is still 'Under Review' on the portal. When I get a response, I'll post it on here - I'm hoping and praying that I (and you!) get accepted!
Would it be okay if I asked what your prior studies have been (i.e. what undergraduate degree you have)? Could private message, too, if you prefer.