Has anyone fought an HOA's ruling against AirBNB

[Frank Manning]

Hey I have a condo in Milwaukee that I have been using as an airbnb investment property. I recently received a letter from the HOA stating that AirBNB is now not allowed and will face a $500/ day fine.

I was wondering if anyone else has come across this issue. The property was a cash cow for us but does not make sense as a traditional rental. Is there any legal action we can take to argue this? I see the loss of income as damages.

Also, what legal grounds would an HOA have to enforce a penalty?

Thanks for your responses. Hope none of you are going through this.