Hello Prema Kamau,
If the signature pasted by you in the admit card is just reversed then there won't be an issue.
You can also re-print the admit card because you still have time.
But if in case the signature in the admit card was printed like this then also you do not have to worry as it was accepted by the NTA system and hence has no concern with you.
It is entirely acceptable.
HOPE THIS HELPS
ALL THE BEST
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