HOAs are particularly hard to deal with; I think you have realized this.
When you make an offer and are in Escrow, they will share the CCR's with you, for a price; usually about $50 for copying.
But, trying to get a copy from them earlier, will be like pulling teeth.
I suggest that you go out to the complex and walk around: Meet some of the residents and ask about the HOA and restrictions. You may ask them if you can copy their copies.
You may also find out other things about the management of the place.
Good luck and may God bless