What are the consequences of not getting RN license renewed on time?

I cannot imagine anywhere that would hire you without a license. They would endanger their Medicare/Medicaid reimbursement and set themselves up for both civil and criminal penalties. Not only will you need a license, but you will also need proof of continuing education.

Was it suspended due to something that happened at the place you were working in Tennessee? Or did you leave there and fail to renew it? Something seems missing.

I would go online and check with your state's board of nursing. Depending on the state and how much time goes by after the expiration date could determine the steps needed to renew. For example, some states require extra CE credits/classes after a few months past the expiration date while some states require extra fees to be paid. 

While you're there, I would also check to see if they have some sort of hardship exception or something. It never hurts to check or call to see what your options are! The worst they can say is no  :)

I truly wish you well with everything! 

You cannot renew a license that is suspended.  You have to get the suspension lifted before you can do anything.  See an attorney in your state who practices licensure law.

Not sure about a suspension being involved but I would reach out to your board of nursing and ask them. When I was out of work for 5 years I kept my license up because I was concerned to put it on hold. Contact the state board and let them advise you. I am sure you worked hard for your license do your best not to loose it. Best of luck to you.