We moved this post to the Wishlist so that we can keep the PowerStore forum for those who need help.
Adding an option in the Admin for changing currency symbols is definitely something we are considering for the next version of PowerStore.
Please let us know if something is missing from that guide. We have tested it and confirmed that it included all the necessary steps, but users were not finding all the references that needed changing. We have since updated the tutorial to make this clearer. If we have missed something from the tutorial, please let us know so that we can fix it.