I am clueless about my tabs being rejected.

Is it possible to improve this area a bit ?, like having a better GUI in that section and showing the reason why a tab was rejected ?, also explaining the cryptic status letter ? (I don't see how a letter is better than a word to describe the status...)

I am doing my last attempt today with a new song, and considering putting my contributions somewhere else if the process with UG continues to be a pain.
I received a rejection with a request to resubmit after making revisions, and the number #1450397. I cannot understand the rejection. My version is significantly different from the previously posted versions, especially in the chorus. I can find no errors in my submission. Any clue will help.