Options disappeared symbol change

[luislopes-outsystems]

Hi, I'm using the Natural Languages Plugin, that plugin allows user to write dates with natural languages, and the trigger character is the @ sign, that conflicts with this plugin. So I went to settings and changed it to +, rebooted as per instruction.
When the product started, nothing reacted to the + sign. Went to see the options, and the plugin wasn't listed.

Don't know what happened, but feels like a bug

[erehwon13]

I'm having exactly the same problem. I want to use + as the trigger character but when obsidian restarts, it says the plugin failed to load. I didn't know if it as a clash with my other plugins but as you had the same problem, I guess is is the Simple Mention plugin itself that doesn't like this character.
As there doesn't seem to be any activity recently, I'm guessing it is no longer maintained.