It seems odd that many of us have varying ota issues. You would think everyone would be experiencing the same problem.
Mine is disappearing ota locals from the guide daily, it's fine till the overnight reboot. Ota recordings play fine without any glitches. Then just like ground hog day over and over they're gone by morning. It's aggravating but my morning routine is to run a scan then fix a cup of coffee. By the time the coffee is ready the scan is done and my day begins with the local news.
Dish knows about the problem, being affiliated with a local retailer I have posted several internet connected receivers to their portal so they can monitor and diagnose the issue. It has been pretty quiet from them, I only hope that means they are diligently working on a solution.
Myself and certainly others here as well are long past ready for a fix. Hey Dish, HURRY UP!