Issues with Z-Wave - missing components

I am trying to pair about 15 fibaro dimmer and relay switches to my Aeotec z-wave dongle in my raspberry pi running hassbian

I successfully paired 4 of them and they are appearing in my UI in home assistant, and seem to be working as intended.

I have continued to pair further switches with my dongle, and they are not appearing in home assistant as devices - either on the front UI or in the states section in the developer tools.

When I log into the open Z-wave control panel, some of them have appeared as I would expect them too.

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However they are missing in Home assistant despite multiple restarts.

I have had a look in the zwcfg_0xc9ecfead, and the nodes after Node 11 are completely empty of details (I hope I have set up paste bin correctly - https://pastebin.com/p2BXqxLP )

I would greatly appreciate any assistance in getting this project back on track and I am completely flummoxed.
Also any suggestions on how to get the unknown nodes - 15 /16 working? originally it was 14 / 15 / 16 that were listed like that. I ended up plugging in a z wave power point to extend the mesh network in that direction, and then selected refresh node info on openzwave, which fixed node 14, but it didn’t do its magic for 15 / 16.