Apparently I'm missing both Excadrill and Druddigon, but I'm not able to buy any more eggs. The price is $0 and the button is greyed out.
Have you never seen those Pokémon before? Like, you didn’t obtain them and they later disappeared?
It seems like a weird bug, no one has reported anything like this. Until I know how it happens, I can’t fix it, but if you download your save .txt and send it to me via Twitter or Discord, I can manually add the Pokémon you’re missing.
18 days ago(+1)
I don't think I ever saw them, but I'm not 100% sure. I bought a whole bunch of eggs together at one point and didn't use most of them until much later. I'll see if I can send you that .txt, though.