@clacanny Hi, upon checking, your current firmware is a customized firmware for PLPLAY(ISP Play in Poland), it is not able to update to common EU version firmware. If there is any issue with the...

@Szymon_S Hi, 1. what is the hardware and firmware version of your MR6400? 2. who is your ISP? by "on 2", do you mean O2? 3. please share with us screenshots of Advanced->Status page,...

@PZConsultants Hi, is there any issue with the DDNS function now especially whether there is any delay in updating the public IP address?

@Santhosh_26 Hi, may I know if the issue started happening after you upgrading the Jio SIM to 5G? If so, please refer to this thread: https://community.tp-link.com/en/home/forum/topic/604130

@Randy01 Hi, are you using automatic band or manually selected band? who is your ISP? Please also confirm if you have any other LTE Advanced Cat6 product for comparison.

@PoneG Hi, do you have any other LTE Advanced Cat6 product for comparison? If so, what is the model number? please let us know the band information and speed working on another device with the same...