Pet constantly deleting itself on 1 character (while turned off)

My keeps deleting even tho I am always turning my pets off. I've spent so much gold on this character simply buying pets over and over again.

[Lure]

   no matter u turn on or off pet, time of pet will going. if turn off pet, pet doesn't eat food.

   best way is everytime log ,  turn off/on pet & fodd once to make sure , food on , pet on and pet could eat food.

   if for high lvl pet, pls use pet food 14days. it's safe way

Unfortunately, my pet is still draining time even after turning off/on multiple times. This character appears to be bugged. Sadly, I doubt devs will fix this.

[Thunderbaby]

Hi! Keep Pet always on! He eats his food in the last 2 hours. The food must be turned off/on after check-in, when time is running out.
For example, pet expires in 3 hours, food off/on and you stay online with the character. He picks up his food in 1 hour. It took me 2 years to figure this out.