MonarchPay is upgrading it's smart contract system.  Consequently, all old contracts & subscription wallets will no longer work. Please withdraw all funds to your Monarch Wallet, from the MonarchPay subscription wallet, and remove your MonarchPay Subscription links from your websites/email/invoices for the time being. Once the upgrade is complete, you'll be able to create a new "Smart Wallet", along with new plans so you can continue taking payments in your preferred cryptocurrency. If you have any questions, please contact us at