Question

I hope everyone is well. I had a quick question I deliver on the east coast and do a block (4.5-5) every day. My standing goes between great and fantastic. In the past month or 2 I received 2 emails saying package was delivered but not received. Was wondering if anyone knew how long until they terminate my account. This is my only means of income so just wondering if I should worry or keep doing business as usual. Thanks in advance and everyone have a wonderful day.