I have very often encountered issues with v0 where it will use credits that I have paid for to repeatedly claim it has made changes which it has not. I have also encountered VERY often unexplained stoppage resulting in wasted credits.
I have sunk hundreds of dollars into debugging these situations. I have been tenacious but I think if there is no respect paid to loyal paying customers on these issues I will have to discontinue usage. I can see many people on your forums with similar experiences.