Fuibanido

hi recently a bug has been happening with my dex in which it shows that i don't have certain pokes but when i see it i have most of them on my pc and this is hurting a lot since there are some quests i need to do to catch pokes and i don't I know whether or not I have such a poke see the images below

I have a similar problem, please fix this I can't do my quests being sabotaged by the game's own system