Question: How do I stop Maple flow inserting two characters for every keystroke on a Mac Air

I am evaluating Maple Flow 20212.2 on a Macbook Air M1 running MacOs Monterey 12.2.

Unfortunately this is being severly hampered because for every keystroke Maple Flow is entering 

that Character twice.  Disabling keyboard autorepeat and restarting Mac or Maple Flow makes no difference.

Anyone got a solution for this?

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