That’s annoying. Sorry. Weird too but I guess old editions get discontinued and no longer supported at some point....
I’ll perhaps take a look add the book details and what kind of language it has about activation of the test. If there are no limitations and no stipulations, I would take pictures of the codes that were not scratched off and try again. Also if you can and check the purchase receipt proving that you purchased it back then would be helpful too.
At the same time, they used to offer test with the purchase of any book but later required the purchase of a full bundle. That **** could’ve been possible for somebody to use only one book inactivate test back in 2014.
The good thing is that you can still use the books and materials and the content is still relevant. The subsequent additions have revise their layout and improve the look of the book but largely left a lot of the content in place. They have been major updates to a few books however, I believe sentence correction was updated significantly but that’s the only one.
But at the end of the day it is their product and their rules. I can tell you that it’s a pretty similar approach with other publishers including GMAC and other companies who have tests. For example was GMAT, you will not be able to activate bonus content several years after. 😢
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