D9 stop working as before

My d9 after about a year of use when it is operating don't suck dust like before , even the sound of moter is more quite than before , i double check it operating in high performance mode but the sound is quite like normal or weak mode !!!! Any suggestions, battery has no power enough?

check is for blockages in the airflow path like the filter bin and brush area because even partial clogs can reduce suction a lot. also check if the filter needs replacing since after a year it can get clogged up and restrict airflow. even if it looks clean if everything is clear then it could be wear on the motor or fan which would explain the lower noise. weaker suction battery usually affects runtime more than suction power but if voltage is dropping it might not run at full strength. worth trying a new filter and a deep clean first before assuming anything major

Thanks for your quick replay I mentioned that also have a reduce working time so battery drain faster   I will replace the filter and I will come back with replay

Hello, regarding the reduced suction performance, we kindly suggest that you try the following troubleshooting steps:

Please check whether the dust bin is full and clean it thoroughly if there is excessive debris inside.
Please check whether the filter is clogged with dust and clean it carefully. If the filter has been washed, please make sure it is completely dry before reinstalling and using it. You may also try replacing the filter to see if this improves the performance.

If the issue still persists after trying the above steps, we recommend that you send the device’s serial number (SN), the purchase invoice, and a relevant video showing the issue to our after‑sales support team, so that we can provide further analysis and an appropriate solution.

Thank you for your understanding and cooperation.

E-Mail:
aftersales@dreame.tech

I replace the filter and the problem still presist do I have to contact to this mail or another one cause I live in Greece!