For burning all coins will be send to this address: EgVWUh8o98knojjwqGKqVGFkQ9m5BDNc9G
Check it here: https://chainz.cryptoid.info/hbn/address.dws?EgVWUh8o98knojjwqGKqVGFkQ9m5BDNc9G.htm


And How does a UTXO blockchain not provide the senders address in a reliable way ... Honest question

Because with the UTXO architecture, the sender cannot be reliably identified only by the sender address.
The sender address is changing with every output transaction. We were looking for a way to make the burn process as easy and anonymous as possible. Because the UTXO transfers cannot identify a clear sender. (which is what this architecture is about) and we want to assign the transaction during the burn process, we are dependent on another variable, the email address.
Maybe somebody who reads this do know a "better" way. We are curious too. 

But my word of honor: We promise to never sell or share any information regarding this service.