It may be a more general problem and nothing to do with AVG. Ever since the upgrade to Windows 10 I have had very erratic Wi-Fi and several attempts by my ISP to correct it, with only temporary success. Apart from the loss of internet services what has irritated me about it is that the notifications from W10 as to whether or not I am connected, have been untrustworthy.
The taskbar icon will often says I am connected when I am not, and in Settings it will say connected when in fact I have no access to the internet. Now, if I am having difficulty with accessing a site, if the icon in the taskbar says I have internet access I will ignore it and go through the 'diagnose and restore' procedure, resetting the Wi-Fi adapter anyway. Often this works,after a number of repeated attempts, though sometimes it reports that 'the problem cannot be found'. In which case I often restart the computer, with some success. If it happens frequently, and it goes through phases when it is annoyingly frequent, that is when I contact my ISP engineers, again. I am hoping it will be resolved eventually. I have not had it happen since the November update, touch wood.