How about other devices like phone, laptop, tablet? It may be the router is loosing connection. Change channel may help. And install the public driver from the chipset manufacturer sometimes do the...

Write in English?

Are you sure EAP245 and EAP225 support mesh? As far as I know, only EAP225 outdoor (different from EAP225) supports mesh. If you go to the tplink website, check firmware note, it will tell you...

In my opinion, you should connect cctv or computer to the client side directly. If no problem at all, then probably it could be the router or settings related to router with CPE210. And also check...

How do you mean "POE transmission"? Is your switch a standard POE switch? If you connect a pc to the switch and it works, then I think the powerline adapter works that way as well

Power led or powerline led? If power led is not lit at all, the unit is dead as I see it. But it's strange that it used to light up only after you unplug and plug it back in. Would it be affected by...