From my understanding, Struct is for database functionalities? I'm not sure we need an actual database. What I'm trying to do here is pretty much to create an automated but simplistic Excel-like table for players to view how much total XP they have and how much they've already spent without needing to do manual calculations by themselves.
It was working very well up until sometime beginning of the year when the extension just stopped calculating past a certain entry as noted in the above posts.
So far, it is still working well ONLY in Firefox and Opera GX. Other browsers turn up bad calculations.
I will note that all attempts to contact the developer of this plugin failed. I even sent an email to the email address provided and did not receive any replies. 😐