Well, I just started over again last night.
Repackaged my HDHomerun spk.
uninstalled TVheadend
uninstalled HDHR3.
Rebooted the NAS
installed Tvheadend without starting it.
installed my HDHR3 spk
choose ATSC while installing it.
All the logs looked good after the install
dmesg

 2203.995421] HDHomeRun: Begin init, version 0.0.11
[ 2204.000673] HDHomeRun: Waiting for userspace to connect
[ 2204.005978] HDHomeRun: End init
[ 2204.551841] hdhomerun: userhdhomerun connected
[ 2204.556391] hdhomerun: userhdhomerun connected
[ 2204.560916] hdhomerun: creating dvb device for 10372AA9-0
[ 2204.566686] DVB: registering new adapter (HDHomeRun)
[ 2204.572441] DVB: registering adapter 0 frontend 0 (HDHomeRun ATSC)...
[ 2204.579183] HDHomeRun0: DVB Frontend registered
[ 2204.583761] HDHomeRun0: Registered DVB adapter0
[ 2204.588496] hdhomerun: device /dev/hdhomerun_data0 created
[ 2204.594218] hdhomerun: userhdhomerun connected
[ 2204.598677] hdhomerun: creating dvb device for 10372AA9-1
[ 2204.604316] DVB: registering new adapter (HDHomeRun)
[ 2204.610237] DVB: registering adapter 1 frontend 0 (HDHomeRun ATSC)...
[ 2204.617063] HDHomeRun1: DVB Frontend registered
[ 2204.621636] HDHomeRun1: Registered DVB adapter1
[ 2204.626359] hdhomerun: device /dev/hdhomerun_data1 created
[ 2204.632303] hdhomerun: userhdhomerun connected

dvbhdhomerun.log

Running as user: root Num of devices = 1 Device 10372aa9 is type 1 and has 2 tuners Name of device: 10372AA9-0 Tuner type set to "ATSC" based on conf file Tuner: 0 Set initial pass-all filter for tuner: 0 Name of device: 10372AA9-1 Tuner type set to "ATSC" based on conf file Tuner: 1 Set initial pass-all filter for tuner: 1 Registered tuner, id from kernel: 0 name: 10372AA9-0 Registered tuner, id from kernel: 1 name: 10372AA9-1

Restarted the NAS (hdhr3 and tvheadend are started on startup)
Go to tvheadend and launch a scan with us_ATSC_center_frequencies_8VSB
68Muxes awaiting initial scan
When it was down to 0, 27 services were found once again without any name :(

https://lh3.googleusercontent.com/-gSYacyYdzA8/ULDqzxU-TQI/AAAAAAABNEU/EyxodWJ7bVw/s928/hts-services.png
Click Map DVB services to channels (it is still clickable after, I can click it 3829 times.. always just print "Service probe started" that is.
Tvhead console

Log Level debug: enabled Nov 24 10:42:15 web interface: Service probe started on "HDHomeRun ATSC" Nov 24 10:42:17 dvb: "635,028 kHz" on adapter "HDHomeRun ATSC", status changed to OK Nov 24 10:42:17 dvb: "/dev/dvb/adapter0" tuning to "629,028 kHz" (Autoscan) Nov 24 10:42:18 uk_freesat: install table handlers Nov 24 10:42:18 eit: install table handlers Nov 24 10:42:20 dvb: "629,028 kHz" on adapter "HDHomeRun ATSC", status changed to OK Nov 24 10:42:22 dvb: "629,028 kHz" on adapter "HDHomeRun ATSC", status changed to No signal

Now, obviously still does not work.
Any ideas where I could debug this and why my services does not have names??
Is it normal I can't even start the channel when I click "Play" on the service tab?
It prints

Nov 24 10:48:45 subscription: "HTTP" direct subscription to adapter: "HDHomeRun ATSC", network: "", mux: "473,028 kHz", provider: "", service: "", quality: 100

And start vlc in the browser but nothing else happen.

Thanks for anyone who could help me. I'm willing to test anything you're asking me to debug this but I need this to WORK! :) I've been working on this for a month, without tv lol