Animation Not Playing On Pawn of Player Start

I hope the Tittle of the question is good enough, but in any case…

I created a custom Character and I am trying to use animations from the Animation Starter Pack. Also created my own AnimationBP and Blendspace. My problem is that the animations work fine on the character when I test it in Blend( And in the Viewport of the character) but when i press play in the Editor the character spawns in a default T-Pose, instead using the animations. What is really baffling is that when I drag “HeroCharacter”, as I named him, from the content manager I see him using the animations( At least the idle one). I’ve checked a million times (Blend Space, AnimationBP, Checking the Anim Class of the Mesh) and everything is as it should according to myself and half a dozed tutorials I’ve watched about Animation BPs and Blendspace and Creating Custom characters in general.

I don’t know if it is of any importance but I’m making an fps game using the SK_Mannequin as a Skeletal Mesh instead of the FPS_Hands, as I wanted for the player to be able to look at his chest/feet when looking down. Also, I would like to add that I changed the Default Pawn from the game mode From the default to the HeroCharacter and the Animation Starter Pack character and the animations play normal in all except my HeroCharacter.

I am fairly new to Developing FPSs and Creating Animation BPs so I would gladly send you more information about anything you might want. This problem is driving me crazy, Thank You for any response, helpful or not.

How is the character spawned when you begin play? Make sure that when you click on your player character in the asset browser, that it has the animation blueprint as the default Anim Class. Also make sure if you already placed your character in the scene, that it has the animation blueprint set for it too.

If all else fails, play the game, eject from the player and click on it, you should be able to see whether your animation blueprint is applied or not.

Ah, I found something interesting. First off, the character is spawned at Player Start. I dragged a HeroCharacter in the level editor and every animation works fine on that one but when I eject and click on the pawn created at Player Start I see in the Details Panel that in Animation Mode drop down menu is selected “Use Animation Asset” instead of “Use Animation Blueprint” that I have in the HeroCharacter.
So far, thank you for leading me to the source of the problem, but it does not let me change that animation mode. Maybe that’s due to the editor simulating the game or something else entirely, I don’t know.
I hope you can solve this problem too 'cause it beats my knowledge. Thank you once again.