I nothing happens whenever I get Boris's gameover, the game seemingly doesn't register it and when I try to interact with Nel in the townsquare after working for Azlos and lowering some of his emotional guard I get an error
Are you sleeping before getting Boris' gameover? It should go you go out and play with him, talk to him about it then get a gameover while out with him, then he'll treat you like his.
As for Nel, the coder put out a Nel fix not too long ago, so hopefully that fixes it.
Also, check the latest update post for more help as they get put into the gdoc.