why does it say " cannot connect to itunes "everytime i try to sign in

"Support" would require many more facts about the exact scenario.

Examples:

• "Every[ ]time I try to sign in" ... to what?
• "cannot connect to iTunes"
  • Are you trying to connect a device?
  • What type of device is it?
  • What specific model number?
  • What version of iOS is it running?
• What version of iTunes are you using (do not say "the latest")?
• What type of computer?
• What operating system and version number?