I also know that there is a promotion for Telegram users. But as far as I know that users are required to do KYC. For that reason I didn't process it when I saw the promotion, that's as far as I know.
What KYC?
I still not doing any KYC at all, I just got notification promotion in WE88 and asking to live chats. For the bonus to be credited you need to join the telegam, share some screenshot and the screenshot needed to show your account information + on the group/channel (to verified you joined).