I thought it might be a general bug and checked others’ profile, but they seem normal.
I have tried the link on different browsers, also on my phone, and the results were the same. This is quite frightening.
i would guess that whatever mechanism updates the profile just occasionally does not get triggered or fails to run completely. so i don’t know that anyone has ever tried before, but i would try just adding a dummy casual observation of a random species that you’ve never observed before, and see if that triggers that mechanism to update your species count appropriately. if so, then delete the dummy observation, and all is fine in the world.