If that is the case, it's still 100% a scam & giving him any amount of money will confirm his idea of having this work.
If you confirm that, he might go more professional and then he'll rip off someone's grandma, before you can click the block button on Telegram.
Please, do not give him anything. You just feed the harmful behavior.
Ripping of grandmas is a huge plague in the USA & Europe. They sometimes lose hundreds of thousands plus their sanity & never can live a normal life again, due to this trauma.
Please, do not give him anything.