I should note first that we’re focused on USD so none of our templates have been built to support other currencies. You can try changing it but we can’t support fixing it if it doesn’t work. Here’s more on currency formats https://support.google.com/docs/answer/56470?co=GENIE.Platform%3DDesktop&hl=en
As for these:
Which “page” are you talking about? The only sheets that aren’t dynamically updating are reports from Tiller Money Labs like the P&L, Category, and Category Rollup reports - those you would need to regenerate using the Labs add-on after making changes to your Categories.
Some older versions of templates (Envelope Budget via a separate Envelope Budget Add-on) may require you to do some recalculating after making changes to categories.
Which figures are not pulling through? Can you share more detail on this?