Snapchat is having trouble recognizing your credentials and is not able to complete the login process for now.It’s a temporary issue and doesn’t mean that you are permanently restricted from using Snapchat. There are many methods solve it like : Swap Your Internet Connection,Restart Snapchat,Restart Your Device and Update the Application so on. If you want to Know more in detail then must visit on : https://guideet.com/snapchat-code-c14a/