Phone disconnected from Cricket Network

This began yesterday intermittently on both mine and my boyfriend's phones where it was showing we could only make emergency calls but then it worked again until around noon today when my phone disconnected from the cricket network and won't reconnect no matter how many times I try to reconnect it. I've restarted my phone repeatedly but it still isn't reconnecting to the cricket network. How do I fix this issue? 

I had to borrow a friend's phone in order to be able to call or look up the issue on the website and I'd like to be able to use my phone  

My phone bill is due tomorrow so I know that it isn't a billing issue. 

Thanks in advance.