Pictures won't send on whatsapp?

Got the new iPhone 5c today and restored from backup. Everything was working fine and i could send pictures until earlier this evening. All the picture I send either have that red exclamation mark by the side or just have a constant uploading bar which does not move.
Any help appreciated

Check your network connection and the size of the pics. Make sure you have enough space left on your phone. Restart your phone and try again and make sure you have the latest version

Delete the application and then install it again.

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