Good morning. 

We have received several emails regarding "state error" while customers checkout. 

It usually happens when your region does not have a specific state/province. 

To have a smooth transaction, we recommend you to fill out state/province with your city. 

This process is done by paypal to prevent fraud usage of credit card or paypal account. 

Sorry for the inconvenience and thanks for your understanding. 

Have a good day-