The price of cryptocurrencies are always changing. To prevent those price changes from hurting our customers, we require transactions to be sent within 15 minutes.
Most cryptocurrency exchanges cannot send a payment that quickly. As a result, the payment can arrive late and need to be refunded. This will cost you time and money.
Many cryptocurrency wallets do not fully support payment protocol. These non-payment protocol wallets make it too easy to send the incorrect amount or send your cryptocurrency to the wrong place.
BitPay recommends using a cryptocurrency wallet that you can trust to successfully use for cryptocurrency payments. Compatible wallets can be found here.