since you can't block https website in url,you can try use IP or MAC to block such website or some other possible solutions... good luck!

you mean your device just can't show the network signals while works normally such as providing wifi and so on? if so,it's really not a big deal,because you can use M5350 normally despite just a...

it's really weird you can upgrade a v4 firmware while you use a v3 device.... but if it works ok now,just stay the same,you needn't upgrade it to v3 firmware

the solution upstairs is correct,do you solve the problem?

maybe you set "connect on demand" on your 8980,so that Internet will drop out from time to time. You can configure it in 8980"s web management interface:network->wan settings->add,choose connection...

I think it's better use 2x same antenna on router rather than a 5dbi and a 8dbi. I don't know if it will have a better performence in wireless coverage or not.But you can have a try,it won't do...