I'm Getting Sued!!!

First time poster here on Reddit, but looking for any insight...

Back in 2013 I was given approval to use the common space behind my house to install a firepit. While I lost the files that had the signatures from the board members, I still have the letter from the Management Company for the HOA acknowledging permission.

I have a real "Karen" that lives next door to me that was denied the right to install a garden with posts/fencing, so she naturally wanted to make everyone else's lives miserable.

The HOA reached out to me asking if I could provide proof that I was approved to do it. I submitted the letter.

After I submitted the letter, it was all of the sudden a huge liability issue. I went on to prove that to be untrue.

After that, they said that I wasn't able to provide the signed documentation from the board to show that it was actually approved. Please keep in mind that this IS NOT the same management company that provided the original approval.

I can provide proof that they already lost other approval documents of mine and of others during the transition of management companies. They lost the documentation for my shed and swing set. Luckily, I was able to provide the documentation for my shed, but was only able to find the documents that I submitted to the HOA for the swing set.

Knowing what you know, do you think this is worth fighting in court? Any and all insight is welcome. Thanks!