Hello!
Firstly, I have coins from the Archpishopric of Riga, the Free City of Riga, and Swedish Livonia. So, when I was looking at the map on the "Your Collection" tab, it seems none of those countries appear when I hover over the Latvia/Estonia region. I would guess that is due to the split-up of Livonia. Or I am blind—that is always a possibility.
And if split countries are gone from the map, the rest of what came out of Livonia may also be gone, as well as what came out of the Mongol and Crusader States. I own none of those, so I cannot say for sure, but they should still probably be checked.
Thanks for reading!