Is it illegal to upgrade the access control in the community, change the old key card into a new one, and not change the property? If it is illegal, how to complain.

If you live here and are the owner or user of the property, you must change your key card, otherwise you can't get in, and the police won't agree to ask for a new key card. As long as the property is reasonable and there is no reason to refuse, the property can be refused for other reasons. If we don't change the nature, there must be another story. If the property refuses to apply for a card because you have not paid the property fee, you can complain to the local housing authority.