@woozle Thanks for your advice! @Raphael303 There may be compatible issue between this router and HUAWEI E3372-325, so I am afraid that there is no better solution for this.

@keyvansole Hi, Sorry to hear that. You may contact the retailer to confirm warranty or return the modem router if you do not need it anymore.

@CupraDine Hi, thanks for your update! There are various factors might affect the performance of a powerline products. There is another article for your reference.

@JanIntelkor Hi， thanks for your update. If you the direct connection from the modem has no internet access, it is suggested to contact your ISP to confirm the connectivity from their end.

@Lancex1313 Hi, may I confirm some details about the troubleshooting you tried? 1.What is your network topology? Do you have a wired PC? And did you connectt a wired PC to the router directly to test...

@aalvestp Thanks for your update. You may continue to monitor the performance and try the suggestions above if necessary.