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Clearing the cache of the Payments app is recommended every time that you assign a reader from one merchant to another, and in general can be helpful when the reader has been acting strangely and going through different changes for troubleshooting.
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To clear the cache and data:
Navigate to the Android settings of the
TERMINALterminal (not the app)
Use password pax9876@@ or 9876 when required
Go to the Apps section
locate the Handpoint app (or the app you're using)
Go to Storage
Select CLEAR DATA
Select CLEAR CACHE
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