Perhaps it was because the technology used by the romance novel website on the server did not support 4G network. 4G network was a high-speed wireless communication technology, but not all servers supported this technology. It could also be because the geographical location of the server where the romance novel website is located is different from your geographical location, resulting in insufficient 4G network signal strength. In this case, you may need to use other web technologies or try to log in to the website from a different location. If you still can't log in to the romance novel website, you can try to restart your phone or change the network environment and check your browser settings to see if there are other network connection options.