Checker say valid but dumps decline

[mindatha]

I'm having same problem. I understand your problem. I did worked with someone, he supplied me the dumps, it worked fine but when I bought the same bins from different shops. They declined. The checker showed valid. He even checked the bins before giving it to me all the time. The same problem for 101, 126, 201, 226.
Fallback is not the issue. There is other issues as well.