Troubleshooting
Solutions for common problems, error messages and technical questions.
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Terminal Not Connected / Connection Error
The terminal is not responding or showing a connection error.
Payment Fails or Gets Stuck
What to do when a payment fails or stays in PENDING status?
Reconciliation: Transactions Missing or Unmatched
Transactions not appearing or not being automatically matched.
POSBridge Tile Missing from Smart Grid
The POSBridge tile is not visible in the Shopify POS Smart Grid.
Debug SumUp Connection
Diagnose and fix OAuth connection errors.