This thing isnt evolving to blissey. If possible pls evolve it to blissey

Hello there! I'm pleased to inform you that your Chansey can still evolve as-is. For Pokemon that have evolutionary requirements (i.e. Level up, reaching max happiness, learning a specific move, etc.), but have reached level 100, you can make use of the Mysterious Candy. As long as the conditions for its evolution are met, the Pokemon can evolve by using the candy from your inventory. For your Chansey, you will need to have it at max happiness and then use the Mysterious Candy. 

 

You can obtain a Mysterious candy by purchasing them from any of the Department Stores for 5,000 Pokedollars each. You can also acquire them from the PvE coin shop for 2 PvE Coins, or from the PvP coin shop for 1 PvP Coin. For more information on the Mysterious Candy, you can refer to this link: Mysterious Candy Information. 

I hope this information was helpful to you. If you have any more questions or concerns regarding this, please feel free to reach out!

 

- Codexed

My chansey isnt evolving still i tried at least 20 times with mysterious candies

Please try decreasing its happiness level via knocking it out in a wild Pokemon encounter. Then raise the happiness level again back to max happiness (255) by visiting the groomers which can be found in Cerulean City House 5, Goldenrod Underground Path, outdoor market in Slateport City, and Hearthome City, and try using the mysterious candy again.  At your convenience let me know if that works for you. If not, I'd be happy to look into this more for you!

 

- Codexed