Absolutely report the profile on grindr and snap as many shots of the chat as possible. (Any photos since what they were insinuating, blacken out or cover in the photo) but for your records of chat and how the convo went. I usually get these red flags and try to snap pics before they end up blocking me.
A buddy of mine was honey-pot trapped by a cop posing as a child and entrapped him, before they had a lawyer he was convinced to sign a document admitting guilt of attempting to meet a minor and provide them with recreational substances and this person is now on 10 years probation and a registered offender. For never meeting an actual underage person and by a cop who physically created a Grindr Profile, accepted the terms of service which state you must be 18 years of age or older, and lied about who they were and got an old crusty judge in the county to throw the hammer down on him. Newspaper also demonized my buddy and made him sound like a crazy predator after their children and definitely was fueling that whole lgbt - bestiality - ____philia are all the same thing from a moral perspective.
Please please (all u guys out there) messaging anyone 19 years or younger on these apps. Grindr, scruff, whatever. If you have doubts, dont exchange photos, explain you want to meet in a public place face to face first to verify id (if you are serious about meeting them) and ensure your ducks are in a row first. Legal system is 'not' favorable' in conservative areas.