Hello@Smilie108 ,
Welcome to our community.
According to Google Translate, your question is that you want to create an EasyMesh Network between the Archer BE9300 and RE655 via Ethernet Backhaul. If there is any discrepancy, please describe it in English.
Suppose you select the 'Wired Backhaul' of TP-Link EasyMesh Devices for Home. You can find more devices that support Ethernet Backhaul.
May I confirm again the model of your range extender? Is it RE655 or RE655BE? If it is RE655, I am afraid it does not support Ethernet Backhaul.
Please click here to see the EasyMesh Range Extenders supporting Ethernet Backhaul.
For the Ethernet Backhaul network configuration, please refer to How to build an Ethernet Backhaul using TP-Link EasyMesh Range Extenders.
Best Regards.