I am playing Skyrim for a really long time, and I am on level 72
I started Dawnguard DLC and I refused Harkon's Gift, but after finishing Dawnguard, a dialogue option appeared with Serana: "I Want You Turn Me Into Vampire".
I chose it, and she bit me, but then everything was normal until I transformed into a vampire lord. Once I turned back, I lost my glowing eyes, teeth and spells and disease stages. The sun doesn't hurt me, and the effects don't show up, but I still have vampire lord powers.
What is going on?