If the signature verification fails during surrender, it may be due to the network. You can try logging out and logging back in. If not, it may be that the signature has expired and you have to go to the counter to handle it.

When there is a problem with online processing, you can try to contact customer service or switch to the first processing method. When there is an error in online processing, it is probably due to the network. You can try to quit reprocessing and try again several times.