XR700 r-apps not loading

I performed a factory reset on my XR700 last night after unplugging and discontinuing use of the Netgear Nighthawk X6S AC3000 Tri-Band WiFi Range Extender EX8000 on my third floor.  My XR700 is still midway of my house and on the 2nd floor.  I believe something related to DHCP on the LAN side is the issue.  The X6S Extender was retrieving some IPs from the XR700 by way of virtual MAC Addresses for about ten devices on the third floor - but by no means would those additions cap the usable addresses assignable by DHCP.  I only have about 75 devices currently.

The Issue

• Device manager does not load, instead it gives you, "This R-App is not loaded yet, please try again in a minute."
• You may see the same name repeated for a device is you go to Settings > LAN Setup, then click the Add button (if Use Router as DHCP Server is checked)
• WiFi signal is great but you cannot connect to the XR700 because it will no longer give your device an IP Address
• Access to http://routerlogin.net/ eventually goes away
• Router hangs completely, and even attempting a reboot from the Administration menu item at http://routerlogin.net/adv_index.htm appears to hang

The Fix

Wait for NetDUMA to release a firmware update which solves the issue above

The Workaround

1. Make sure you have good router placement.  Not in a media closet.  Put it in the open and midway of your house if possible.
2. Make a list of all your MAC Addresses for your devices and determine which ending IP you will assign to it (2 - 254).  Remember to reserve one IP address per adapter your device maintains.  For example, for a computer with 2.4/5GHz WiFi and an ethernet port, reserve 1 IP address for the MAC of the WiFi adapter and 1 IP address for the MAC of the ethernet adapter.  The procedure to finding the MAC address varies from device to device.  You may have Google how to do it for each device. 
3. Unplug and discontinue use of any WiFi Range extender - at least until your initial DHCP Reservations are set.
4. Use a paper clip to reset the router as the procedure states in the XR700 User Manual here.  Currently, it states to press the reset button for at least 10 seconds. 
5. Wait for a few minutes.
6. On an ethernet-connected computer, navigate to http://routerlogin.net/ in your web browser and after you perform the initial setup, then on the left side bar menu, go to Settings > LAN Setup
7. Make sure Use Router as DHCP Server is checked and apply this change.
8. Under Settings > LAN Setup, click the Add button.
9. Add your ending IP (2 - 254) at the far right of the IP Address field, MAC Address, and Enter what you want for Device Name - then click the Add button.
10. Click the Apply button every so often to save your additions, but continue to click the Add button again if your have more devices to add, then repeat Step 9.
11. Click Device Manager and using your knowledge of your MAC addresses, you can click on a device and set its Name and Device Type and then click the SAVE button each time.  Repeat for another device.  I do not know why device manager cannot automatically use the name you entered in Step 9.
12. Unless you plan to use it, Disable Ethernet Port Aggregation after clicking Settings > Advanced Settings
13. After testing, set up your WiFi extender if required.  Once your devices start showing up in your extender, they may start receiving virtual MAC addresses from the extender.  You should not have to add IP addresses to these virtual MAC addresses.  In device manager, you should see the IP address you set for each device (still testing this statement though).
14. If you connect a Mesh extender to your XR700, there is a Enable Smart Roaming setting in Settings > Advanced Settings > Advanced Wireless. If you want to try it, make sure you set it after you have connected your Extender to the XR700.

Tuning Tips

• Click Settings > Advanced Settings > Advanced Wireless and check Enable 160 MHz bandwidth in the 5 GHz band
• Click Settings > Setup > Wireless Setup:  
• Uncheck Enable Smart Connect
• Uncheck Enable 20/40 MHz Coexistence
• Set a short preamble instead of auto for both 2.4GHz and 5GHz
• Under Wireless Network (5GHz 802.11a/n/ac), select a DFS Channel and a Secondary VHT80 channel, then click Apply - ON THIS SUBJECT:
  On my Google Pixel, I installed the Network Analyzer Pro app by Jiri Techet.  It's "Wi-Fi Signal" menu helps out immensely.  It shows the channel, signal strength, and other info for your 5Ghz and 2.4Ghz bands.  I cannot verify its accuracy, but it appears to be legit.  Make up your own mind on this if you decide to try it out.  You click the little dualing wi-fi signal icon at the top right while in the "Wi-Fi Signal" portion of the app to switch your view between the 5Ghz and 2.4Ghz bands.
  
  My friend downloaded the app on iPhone, but it did not have all the features I had on Android.  Check to be sure if you are installing on iPhone.  There also may be a better app out there by the time you view this post.
  
  Additionally, other routers nearby may channel hop or your neighbor could get a new one, so the information you see in this app is only as good as when you are currently looking at it.  It is also good for testing your signal from different areas of your house.