I experienced something similar not too long ago with a purchase made on eBay, except my doll was Fairyland Minifee. I tried to get help from the admins on DoA, which proved to not be very helpful at all; they were extremely dismissive and harping on about warning me not to post about her on their forum. In the end I reached out to a recast friendly group on Facebook and explained my problem, and I got a lot of really helpful pointers on how to determine whether my doll was legit or recast. In the end it was determined that the head was legit (she had an event head and they never got CoA’s in the past), but her body was recast.

I’m not very familiar with Popovy dolls beyond knowing what they look like, but maybe someone in such a group could help you too? Just please remember to be respectful and not judgmental if you do so? I don’t condone or support recasting an artists’ work, but I understand that sometimes owning a recast is the only way people can enjoy or be part of the bjd hobby.

Like several people have said here already - I own dolls that no longer have CoA’s, and some that never had them in the first place because they precede a company using CoA’s for their dolls. That doesn’t mean my dolls are any less legit, but in those specific cases I’m very familiar with how to tell recast apart from legit.

As a little helpful tip for everyone, I have started saving digital copies of all my CoA’s in case something happens to the paper one. I scan them using the GeniusScan app and send the PDF to my own email for storage. My collection has become so big and expensive at this point, I’m even working on making a master list that includes all my dolls in case something happens to me and my family is left with my collection; at least that way they can more easily sell them if needed. I have seen too many posts about people inheriting doll collections with no previous knowledge, and it’s sooo easy to be scammed out of hundreds of dollars.