Hi, i am Mark Smargon, co-founder of Colu, the conversation you posted is with a scammer, our support people never approach anybody directly to participate in the sale!
We did give pre-sale discount but not without lockups for up to 3 years, please read all info here:
https://cln.network/pdf/token_sale_summary.pdf
But the pre-sale is long over so we don't give discounts anymore.