My iPad is very old so that may make a difference as I don't think it updates anymore. That said,  new connections, both remote and local work when i added them today. My local connection on Chunky is in the format: 

http://192.168.1.XXX:2039/opds-comics/

I also have a remote connection to the same server in Kuboo that has the same port but just uses "opds" not "opds-comics". I dont know about any security checks though. My server is a raspberry pi here in the house... who knows if that makes any difference. 

In my install, the port is 2038 not 2022

http://192.168.1.123:2038/opds-comics/

I installed it last night. I confirmed today that it's version 4.9.0 (linux, arm). I haven't installed any prior releases. When I get some time, i'll try logging in with Chunky on IOS

Every file has the volume name in it, so that's the issue. Renaming the files isn't an option due to the large number of them (thousands)

With regard to the scan, a partial scan shows no books added. I suppose it scans everything before adding the items to the library. With large libraries this will be a problem for many users. In my case, I aborted the initial scan due to the amount of time it was taking, leaving me with nothing to show for it. In ubooquity's case, even a partial scan adds existing books because it's going folder by folder, rather than grouping at the end. During ubooquity's scan, it shows the progress... it shows the number of things being scanned going up, so at least I know it's working. Aborting the scan still leaves me with new things added. A basic  spinning circle doesn't give any real feedback. That circle could just be a gif spinning away... how would one know that anything is actually being accomplished? For testing purposes, I ran a scan on some small folders to confirm it was working. 

With regard to OPDS, once I logged in with Kuboo on a mobile phone, it showed 4 folders: on deck, libraries, collections... something else, I can't recall. Nothing was available in any of those views. 

"It has everything and more that Ubooquity had"

This may be a good option for Manga (I don't read manga so I don't know) but at present I found it unsuitable for use with comics.

It doesn't seem to have an individual issue view, or if it did, it certainly wasn't obvious or was not working for me. I installed and tested it, and it essentially treats an entire volumes as an issue, and individual issues as "chapters" within it. So... i suppose one must just skip through hundreds of "chapters" in a massive series like Superman to get to a specific issue. A lack of a way to scan through hundreds of covers of individual issues... it's a no-go for me.

Other than that, it looked good, though there wasn't enough feedback on some important things like... what was happening in a library scan. In a huge scan there was just a spinning circle, so I couldn't tell if it had crashed or was just slow in a big library scan. Also, though I was able to log in through OPDS I wasn't able to see any issues within the folders, so OPDS isn't an option for me either.

Also, personally, I disagree with the developer's choice to FIRST support grouping issues in a series based on their file names, rather than by folder structure. Grouping series by file names and disregarding folder structure means a lot of file name manipulation may be required for those of use that have been organizing things in folders for years. Its very ambitious for the initial release to use filenames and expect to get things close to correct, without a ton of file names needing to be manipulated. For use with 10s of issues it might be fine, but not for thousands.

Dead or not, Ubooquity is still a better option for comics. I wish you well in your development efforts though and will keep an eye on the project.