disconnected by ppp

i have a usb that provides internet through a telephone company, but it keeps connecting not receiving any data and then I get a message that says you have been disconnected by ppp...i read something that said i should check the console log so i pasted what i found

Giannas-MacBook-Air.local com.apple.SecurityServer[15]: Session 100062 created

Aug 28 16:40:41 Giannas-MacBook-Air.local com.apple.SecurityServer[15]: Killing auth hosts

Aug 28 16:40:41 Giannas-MacBook-Air.local com.apple.SecurityServer[15]: Session 100060 destroyed

Aug 28 16:44:16 Giannas-MacBook-Air.local com.apple.internetaccounts[221]: *** Entitlement com.apple.private.iaaccounts is missing.

Aug 28 16:44:16 Giannas-MacBook-Air.local Finder[157]: *** remoteObjectProxyWithErrorHandler failed: Error Domain=NSCocoaErrorDomain Code=4097 "Couldn’t communicate with a helper application."; {this is the message that keeps popping up