My english is poor too. But as I have understood, here is not enough information. What issues? Getting disconnect at one moment on all APs? In both diapazones(2,4 5)? Are the APs autonomus or U have controller? "we are suppose to reconnect SSID to use Internet." Could you write it in ather words please?
Shaik, Ok, you are using outstanding Solo AP whitout controller. Do U have WEB or CLI access on each of them? Do you lost your WiFi on ONE R700 or on ALL on them at the same time? In what kind of equipment plugged on your APs? In whose networks plugged your R700? "we reconnect wifi to use internet". - I do not understand. How it works? Try to answer on these questions & maybe U will fix the problem by yourself.