@venusxd Hi, What is the hardware version of the TL-WPA4220? May I know how long have you had the adapters? When did this issue start? It is very likely the adapter might be broken and needs to be...

@Marco85roma Hi, Have you tried to add via powerline key or assign a new network name for all of them; Via powerline key: https://www.tp-link.com/en/support/faq/1615/ via network name:...

@ciberboy please have a check of your private message and you could send the required information to my email and i would forward your case to the senior engineers. Hi, if anyone had the same issue,...

@HOD6IE Hi, could you please help me check the following details: How about your network structure from the router to powerline adapters? Have you download the powerline utility? --if yes, what is...

@Me2021 Hi, could you please help me check the following details: How about your network structure from the router to powerline adapters? Have you download the powerline utility? --if yes, what is...

@beno_29 Hi, Could you please update the following firmware to have a look: https://static.tp-link.com/2020/202010/20201030/TL-WPA4220_180308.zip Thank you very much and wait for your reply.