HOA requiring me to make changes from previous owner

[van1975]

What is the name of your state? North Carolina

--The HOA was aware and actively involved in my closing of a townhome
--A "frosted" window treatment existed from the prior owner
--Two months after my closing HOA sent letter saying they had no record of request for
the window treatment
--I told them it was from the previous owner
--HOA replied they still needed a request form "for their records"
--I filled out the form explaining it was from the previous owner
--HOA sent a letter saying the request was denied and told me I had to replace the window

Is this legal? The HOA was fully aware of the change in ownership but never informed me that there were violations to the townhouse. Therefore I purchased a free and clear title. How can they require changes "after-the-fact."What is the name of your state?