Brush is tangled

Hello Support.My mova z60 ultra bought last march 2026, today started to give an error message. Says that the brush is tangled. I do maintenance once a month to blow the dust on the hepa filter etc, wash the used water tank frequently, changed already the washing mopping roll for a new one after 3 months of usage, and today I have installed a new pair of brush rollers, after checked if it was clogged somewhere, cleaned the outside of the bearings where the brush sets. Same error message. Nothing is tangled but still stops and gives the same message. I have reset the device, shut it down for 10 minutes, start up, make it run, same issue. I have then reset to factory settings. Same error.
Could you please help or advise me how can I troubleshoot further?
Thank you in advance

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Good morning. We apologize for the inconvenience caused. I understand how disruptive it is when the unit keeps reporting a brush‑tangled error and stops working even though there is actually nothing tangled around the brush.
Thank you for already completing troubleshooting steps including installing brand‑new brush rollers, checking for blockages, cleaning the outer side of the brush bearings, resetting the device, powering it off for 10 minutes before restarting, and restoring factory settings.
As a final step, you may try clearing the app cache. If the issue persists, please contact after‑sales support for further assistance. Email: aftersales@mova-tech.com

Same issue. Reaching support as advised.
Thanks