David Robert has a subscription of 21k subscribers on telegram group @bitcoincomp, hes scamming people by saying that hes going to help people earn $3000 from investment of $300, after investing $300, hell ask for $500 upgrading fees, than hell ask for $700 maintenance fees, than hell ask for $500 tax, and $500 withdrawal fees, than will ask $700 his commission, than will ask $600 decline fees.
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Hes using dynoinvest.ml to proceed with this scam.