I have been on itiariaions of this site and similar ,sort of related sites for decades. I have zero problems paying to maintain the sites, and I feel there are other ancillary benefits to charging a slight fee. That being said, I found the process challenging, and I was actually pleased with myself for seeking out further relevant material and preserving until resolution, although anyone could do it. I'm sure if anyone gets stuck, asks politely and listens to the answer carefully, they should be fine. I think we could improve security here with a minimum of changes by the users.
But that's just my $.02!