Could also be different usage, but the mod just doesn't switch techs for me at all anymore since the last update.
https://drive.google.com/file/d/1s7tvLM48F4ZOzT1cdjpupXtw46RTasli/view?usp=sharing
Here's my save file. I have the gut feeling it's about a combination of manually reordering the queue + saving or loading with a specific order of the queue that the mod doesn't like.

Could you maybe add a / command that runs the mod? Like, to test and debug if the mod isn't running, that outputs what happened?
Like, an output of "Current tech: X, no reordering because is already highest science pack, available in 88% of labs" that would give me (and other users, and you too I guess) a better understanding of what's the problem.

There's a button in the shortcuts section next to the quickbars that turns the mod on or off, so I think you just need to press that. In the last update I added that button and removed the "disable tech until X" setting because somebody asked for that. In retrospect I should have made the mod turn that button on automatically if you update to new version..

Could you maybe add a / command that runs the mod? Like, to test and debug if the mod isn't running, that outputs what happened?

Good idea, will maybe add that for testing.

Oh my god thank you! I read the changelog of course but didn't think of that.

Also a huge thank you for making this mod so useful. Is there a way I can support you, do you have a kofi or something like that?

I came here regarding the same issue.

You should absolutely make the mod button toggled on by default. It doesn’t make sense to have it off by default; it will only lead to confusion, which happened to both me and OP.

Also a huge thank you for making this mod so useful. Is there a way I can support you, do you have a kofi or something like that?

Thanks for offering! But no need.

You should absolutely make the mod button toggled on by default. It doesn’t make sense to have it off by default; it will only lead to confusion, which happened to both me and OP.

Ok, new version of the mod has it enabled by default at the start of the game