Hi, I found your app through the handmade hero server, so I wanted to give it a try. Upon opening your app and I just see blank font bitmaps.
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Can you download the last version and tell me what you see?. It should either show you an error, or render normally, or render readable but ugly text (in this case it is a drivers problem that i have no idea how to replicate to fix it).
if it still shows blank characters or nothing at all then i think i will know how to fix it.