@casino Let me do a bit more analysis.
First thing you need to find out is whether the problem is device dependent. If it’s device independent, then all devices, no matter it’s Windows, tablet or phone, will exhibit exactly the same behavior. I.e., if on Windows you see 5 minute on/off cycles, then you’ll see 5 minute on/off cycles on other devices. When you can surf the Internet on Windows, you can surf the Internet on other devices at the same time. When you are blocked on Windows, you are blocked on other devices at the same time.
If the problem is device independent, then you need to do some tests to see what kind of network problem it is.
If the problem is device dependent, for example, if Windows behaves differently from other devices, then you need to figure out what differences there are between the different devices. If this is the case, then trying to troubleshoot at the network level is a waste of time. Because that’s not where the problem lies.
@casino Originally you reported that the problem was only for your PC, not on any other type of device. And that was why you suspected that it was an outdated Windows XP problem.
Admittedly there is a problem, but we have to identify where the problem is first. The problem cannot be fixed until the root cause is found.
I have to say that this is not a router problem by itself. Because if it is a router problem by itself, then all of our users will be complaining madly. And since we are not able to reproduce the problem, there’s no way to find a “fix”.
Because originally it was a problem only for your PC, and now it occurs on all of your devices, something must have changed from then to now. Most likely, it has something to do with your network (Internet Service Provider), or has something to do with your device(s) in particular.
I looked at your original thread again. A screenshot showed that the error message was displayed in Italian. The router would only output English. What software on your PC was translating it into Italian?

@casino When did it start? Everything seemed to be working for you for a while. What changed in between?
@casino The behavior is the same as before, i.e., periodically you can surf and then you can not (in cycles of about 5 minutes), right? And it happens only on the PC (XP or 10), not any other device?
@casino Looks like spam sites with a lot of junks. These should be blocked. But more importantly, you should let kids be aware that sites like these are dangerous. There are dangers of phishing & viruses. In fact, the first one is blocked by “Google Safe Browsing”.
It’s not possible to find all sites like these, since they popup everyday. But kids should be educated to spot the danger and avoid them.
Alexa.com will list similar sites when you enter these domains.
@captaindad We tested port forwarding again, both UDP & TCP. We did not find any problems.
@CaptainDad Thanks for the feedback. We’ll look into this.
For Access Control to work, the pcWRT router only works in router mode. You may try to reverse the connection, i.e., put the pcWRT in front of the NETGEAR and put the NETGEAR in bridge mode. But if you want to bypass Access Control for devices connected to the NETGEAR, you’ll need to list each individual device in a separate profile (not just the NETGEAR).
@antimony316 Either text mode or graph mode should work. The key thing is you need to click the Save button after you dismiss the popup dialog. We’ll try to make it more intuitive in a future update.
@antimony316 We are not aware of any problems with saving a calendar. What steps did you take to create a calendar and how did you verify that it can’t save?
@casino It is not allowed – it is required to check “Allow router password reset on login page” when you check “Override router Reset button”. However, the former can be turned on alone.
As of v1.28.1, you can override the Reset button on the router so that it doesn’t restore to factory default. On the System Settings page, if you check both “Allow router password reset on login page” and “Override router Reset button”, the router will send a notification to your email instead of restoring to factory default.
@thepaintedtiger The fix has been released in the last update. Please take it for a spin.
@dubyasqrd The update has been released yesterday.