A bit of a late reply, sorry - glad you figured it out guys.
A note on big POI files, I recall deniska saying that only the closest 400 locations will be shown (and upto 10000 per file), so when you scroll to a new area toggle to hide and show POIs again to show the ones for that area.
Non english characters - I can include an option to strip them out, or if someone wants to post a mapping table substitute them for english letters.
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