Wow, I screwed something up in the code bigtime with the revision of the weapons scripts. I thought I had successfully converged both the script for adding and calculating the attacks on the first page and on all the companion pages (they used to be 6 functions, but are now only 2), but this isn't true at all.
I have been going over all the changes for the last 2 hours and finally found all the things (I hope) that were causing issues.
It was really helpful that you posted a link to your sheet that you were having trouble importing, that made the whole process a lot easier for me, thank you!
I'll try to get a rectified version out as soon as possible, but it will probably be tomorrow before I'm able to do so.
What UA stuff currently isn't in the sheet has a long answer. You can find all the included UA articles in the Source Selection Dialogue. Anything that isn't listed there isn't included.
From the sources that are included, only the Spell-less Ranger is not included.
There is, unfortunately, no official support for Adobe Acrobat for Linux anymore. You can get an older version of Adobe Acrobat, but that doesn't support the full API that my sheet requires. Some Googling revealed that you can run Adobe Acrobat DC on Linux, but it requires PlayOnLinux to function. I have very little experience with Linux myself, so I'm not really the right person to ask how to get something like that set up.