Im not to deep into the RPGM engine and am not sure but it should do the trick to simply remove the +gobu_num following the ", at least in that line for the players that choose the english option, the other languages are just beneath that
View attachment 2144725
Maybe someones more interested in a real fix, like the dev, but I'm going to test my bandaid fix.
The line can be found in Game\js\plugins\m\MayoGobu.js, for everyone without an editor like VS Code etc. you can just right click -> edit that JS, that should normally open it up with the windows text editor, CTRL + F to search for gobu_num and then just get rid of "+gobu_num" and save the change.
It's necessary to get rid of the plus sign before gobu_num, cause programming.