I thinks the blockers are the main issues on the app and they bring is bad reputation.

When you send your location, adresss, personnel photo, phone numbers and you wait that personnwho was suppose to come. Finally, the guy just blocked you and your not able to keep any info on that person. This person can keep all your attached and infos in conversation.

Well I suggest that:
If a person blocked you, you receive an instant message who advise you that you been block and you have the option to keep that frozen profile and also all the conversation and photos. Maybe you can reveive a username code of that person, I mean not his email, but at least a username code number that grindr files can relate to an email so that will inforce the security.