I am running into this issue constantly these days. Once I have successful sale transaction with signature verified, any subsequent transaction I attempt fails after signature verify state.
This is what I see in console for the error message:
Message: {"attachment":null,"attachmentEncoding":null,"attachmentUri":null,"authentication":null,"directed":false,"fragmentIndex":null,"id":"1724","lastFragment":null,"method":"REMOTE_ERROR","packageName":"com.clover.remote.protocol.websocket","payload":"{\"errorMessage\":\"Payment not found in current order, cannot process signature verification\",\"method\":\"REMOTE_ERROR\",\"version\":1}","remoteApplicationID":"com.clover.remote.protocol.websocket:1.0-356","remotePayCompatibilityVersion":1,"remoteSourceSDK":"com.clover.internal.apps","type":"COMMAND","version":2}.
How do I recover the device from this error. Once I close my browser window and redo, it will work first time and again same loop of error.