Router is blocking access to my.maxon website

[DayVid]

I'm more and more upset about this router. Today morning I got "403 Frobbiden" message at My Licenses and Sign in
On the other hand I can access Maxon
But "my.maxon" is necessary to valid my licences when I start maxon software such as Cinema 4D. I don't know what happen because it worked in past weeks/months.
What I know it's router is blocking it. Why? Because I've change my internet by making phone as hotspot with mobile data and I can see this page without any problem.
So I've back to router and I even changed DNS (primiary I'm using Cloudflare 1.1.1.1). I change it to Google (8.8.8.8). No luck.
Still blocked.
I turned off Threat Prevention. No luck.
I don't know what exactly blocked it?

Router RT6600ax
SRM 1.3.1-9346 Update 3

 

[Rusty]

I don't know what exactly blocked it?

The only other thing might be firewall settings or Safe Access rules

 

[DayVid]

Thanks for help.

Safe Access
I removed my device first.
Then I removed whole profile.
Then I disabled "Threat Intelligence Database".
Non of this helps.

Firewall
I have just two "automatically" created rules because of port forwarding (80 and 443). I have NAS in my LAN where I use reverse proxy for services which I'm running on it. Thats all.

But I found solution:
Restart router helped That was shot in the dark but if nothing works try to restart hardware. I don't know what to think but thats not good. Frankly I'm super happy with Syno NAS which work like a charm. I cannot say the same about Syno router unfortunately.

 

[Rusty]

I cannot say the same about Syno router unfortunatel

Glad you got things going, but I hear you. Still, this might be a one time thing. Try and test it out to see if there will be any repeating cases.

 

[fredbert]

Could be a cached DNS resolution, rebooting would definitely flush out the router's cache.

In UK overnight there was a big Virgin Media outage: I saw some were tying some of the issues to maintenance windows in Cloudflare datacentres. Regardless of any link, there could be some DNS cache-aging going on. For me I didn't get Internet access resumed until 08:30 UK time.