Hello aspirant....
If you filled April mains as a fresh candidate without linking it with the January one ,it may be a problem.Because declares in it's information bulletin that multiple application may be rejected.NTA will also give time for the correction from 11 th to 15th march.Dont worry it is only possibility according to it's information bulletin.In my opinion there is no problem because you have done payment process successfully.Wait till 11th March.
Hope it helps you.
Best of luck.

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