job gave me a check for materials for remote job and wants me to zelle PLS HELP

A person was hired for a remote job at NJ Horizon Health with BCBS after a chat interview, received a $2490 check, and was asked to send $1000 via Zelle to a vendor. The company later requested the remaining amount via CashApp, causing confusion and concern. The bank confirmed the check cleared, and the individual provided their SSN via a W-4 form.