Rsk9

Hello, I've been trying to farm Dratini/Dragonair for days now. I was originally trying to encounter them in Dragons Den and was able to catch about 40-50 of them within a day or two, playing sporadically. I didn't know that I needed to get the hidden ability, Marvel Scale, to get the Dragonite ability, Multiscale. So I bought the Black Medallion to try farming again. I have tried Super Rod fishing, Love Island, and surfing around Dragons Den for the past 12 hours, straight. I have encountered only 2 Dragonair. I don't understand? It doesn't seem fair at all that the moment I spend money to get a Black Medallion, the spawn rates all of a sudden reduce to 0.001% or something? I don't mind a rare and difficult spawn rate, but this is absolutely insane. It should not take 12 hours to find 2 Dragonair. Is there something wrong with my account that is restricting me from encountering Dragonair? It really doesn't make any sense to me. I have encountered only 1 Dratini in all my play time. Please fix this for me. Thank you.