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That's a lot on Comenity apps. Where they all done on the same day? Or possibly within the same month? If you, you may have triggered a flag for them. In my experience, the store cards were instantly approved and that message was a decline.
Just out of couriosity, why so many jewelry store cards? Comenity can be generous with CLI with good usage
No. You haven't pushed your luck too far.
Have you applied online? I'm asking because usually it takes 2 weeks for them to notify you.