@LucKar Try to setup the password manually via the tpPLC utility. Below is the instruction: https://www.tp-link.com/support/faq/1611/ May it help.

@Coto Thanks for your reply. There should be an ethernet port on the TL-WA850RE. It is located on the bottom. If not, please double check the model number. Besides, what is the model number of your...

@soloking Ensure that the firmware of the extender is up to date. And try to enable the mobile hotspot on your smart phone and verify whether it can be detected by the extender when you set it up....

@tiguy045 Sorry to tell you that we can provide English service for global users now. It is suggested to contact the local tech support to get some suggestion....

@benand_idk Does radio work with it connected to the wifi network? If so, there may have some interference. While it should not affect the performance of the extender a lot. You can take some time to...

@SheldonMenez Hello, do you have any TP-Link device?