I have a question regarding the "Dr Martin's Bleed proof white" product and kind of need help with it.

Back when I made a course with Joe Kubert I received a Dr Martin's white to use over the inks to fix mistakes and create effects but it kind of disappeared and I had to buy another one recently since I wanted to try my hand at inking again.

But the "thing" I received is kind of weird, it doesn't stick to the brush so it's quite difficult to apply, and when I apply it is kind of oily (and it's well stirred). What's worse is that when i try to reapply ink to cover it the ink won't stick, it dries the ink almost instantly but it becomes like a crust that wont stay over the white product and most of the time the crust get stuck to the brush as it's being applied.
It also damaged a brand new prismacolor pen as soon as it touched the Dr Martin white product on a page (and the white was dry from the day before)

It's been several years since I used the product but I can't remember it being like that, i actually remember a totally different experience with it.

How do I know if I got a damaged product?, or Dr. Martin's bleed proof white works like that and I'm doing something wrong?

I wont be trying another Dr Martin product until i know whats going on, but was also wondering what other product can be used to cover ink (with white) to fix mistakes and make effects?.