Suspicious in all .
A novice account invites you to a private conversation in telegrams, instead of putting everything as it is right in the branch.

The fast software that you will probably be asked to install about which you know nothing.
Considering that people have no reason to give these 50% besides an oral agreement, I think that this will be done by software that is unlikely to bring something but can easily take your data and currency from you.

Deception for the very naive.