Magento 2 checkout issue

I am having an issue with the Magento 2 checkout process in the shipping address area. This issue has never occurred before and I am looking for someone to help troubleshoot the issue. I need someone with Magento 2 experience who can identify the issue and develop a resolution. The client is using Magento 2 and this issue has never occurred before. If you have Magento 2 experience and are able to handle this level of checkout issue, please reach out and tell me how you can help.