That scope probably got its front end bent. Such damage will offset the target image going through the scope's lenses as their mounts up front are no longer aligned correctly.
The fall may have also damaged the internal erector tube that the adjustments move. Or cracked something and it's no longer water tight.
I would send it to the maker's hospital and have the scope doctors fix it.
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Former US Navy & Palma Rifle Team Member
NRA High Power Master & Long Range High Master
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