@TP-Link 

Hi TP-Link , 

we have been altered packets between cpe and acs server and the MIDM device was tried to set new headers for packet . 

the response of device was got a text./html header and cpe does not process it . so i modified the rule and keep content-type/content-length header as same before . 

Tada ! , the device is working and response to requests . it's not device related issue . 

but we got another problem . some of tp-link devices with multiple versions ( firmware version ) and multiple models return 404 on connection request URL . there is no cr path specified but it always return 404 even if we hit the url from a connection behind the modem ! 

it's another issue and we investigate it . can you help us out to solve this one ? 

also i have a private suggestion . may i send a private message to you and discuss about that ?