I got a lot moneypaks every 2-3 days and i use people on sythe to redeem.Is it totally safe if the moneypaks got redeemed? I've heard some people got moneypak chargebacked several years,can someone explain?
They can report it stolen and it might cause issues, but moneypak is generally a safe way to accept payments.
I was personally blocked from using Moneypak, I assume because of volume redeemed (which was under the $4k monthly limit), though I never had an issue receiving my money.

