Connecting subscribers to Telegram channel through ice-magnet

The task:
Connecting people to the Telegram channel using a ice magnet

The Solution:
3 days free marathon.
Creativity launch: Facebook + Instagram, Post and Post

Goal RK: Traffic on the Telegram Channel
Budget: $90

Number of passes: 925
Number of subscribers: 215

Cost of transfer: 0.10$
Cost of the subscriber: 0.42$