My point is, you seem to be involved with a lot of DirecTV installs. You should take a few moments of your time and read thru all the info about DirecTV systems, so that you are familiar. You don't have to become an expert but you do need to know all the components and how they work.
Solid Signal has a lot of good info on their site for this kind of thing.
https://blog.solidsignal.com/

DirecTV tech = idiot! This why I mentioned 'finding' a DirecTV guy in your area. Because most are going to be garbage and it will take awhile to find one that is competent. When you find one, slipping him an extra $50 or $100 when he comes out to work on a system, will go a long way to incentivizing them to do a good job and make sure everything works correctly before he closes the work order.

The new DirecTV equipment is flaky as hell. So yes, getting the "no server was found" is common. You have to reboot things, reconfigure things, until it finally decides to work. It is a PITA.
Note: Wireless DirecTV clients are the devil! You should avoid them in an install at all cost. Being you lose some picture quality with wireless clients as well, you should always try everything in your power to get a coax to the client location 1st, before diving into the hell that will follow working with a wireless client box.