Has anyone else figured out this issue? I upgraded to an eero Pro 6 and now my Synology NAS is having trouble accessing the internet. eero seems to be blocking it. I don't have eero secure. I've tried updating the DNS servers and port forwarding (which is only relevant for eternal access). Nothing works.

How to block everything (all incoming and outgoing internet access) except those applications are in firewall white-list?

You can use another router instead of Eero?  Do you think my old talktalk one would work. Or can it be fitted as a network range exrptender if I duplicate the network settings.  Or are Eero so “special” they only work with themselves; it wouldn’t work with my tp range extender  

Solved!  I was having problems with linking to a shopping site (Sonos) from a points shopping referral site (Advantage shopping).  I would get the error that the site cannot be accesses and Safari gave me the URL that was failing.

I figured out what the referral domain site is that was failing and white listed the domain in the eero app (eero secure / advance settings / block & allow sites).  I then tried the link again and poof!....it worked!  No need to use the guest network or turn off eero secure to access the site.

For those of you who might not know, "white listing" is the act of giving your network permission to access a domain that might otherwise be blocked for whatever suspected reason (security, inappropriate content, etc.).  Use this process selectively since some sites might be blocked for a very good reason...they really are bad!

Had the same blocking issue, had to whitelist the site. 

This is so weird and frustrating. 
 

I’m having this as well. I can’t get to google.com but other sites work fine.
 

I don’t have eero secure but I did have the trial. It worked fine while I was on the trial but seems to be broken now. 
 

I can work around by using the guest network but that shouldn’t be necessary. 
 

Any other ideas?

The best feature of the eero is its design -- unobstrusive, small footprint, blends into the wall.  It looks pretty.

The worst feature of the eero is that it is not a router! It is a router that routes only when it feels like it! I tried all of the solutions mentioned here. Yesterday, I finally just unplugged the satellite eero and that seemed to finally let me access all the websites I needed to. Tonight, suddenly it decides that it no longer wants me to access google.com -- yup, it was blocking me from google.com. After an hour, of switching back and forth between regular and guest mode and rechecking everything on the cumbersome eero app, it suddenly decided it was okay to let me access google again!

I just purchased this 16 days ago. For the first week, it seemed fine.  Then, the nightmare began!  While it is now past the return date of Best Buy, I refuse to waste anymore time dealing with eero!  Tomorrow,  I will be going to back to Best Buy to purchase a standard, who-cares-if-it-looks-like-an-alien, router!!! 

Eero Saarinen was a genius of form and function.  This amazon eero is sadly a poor example of it.

If you think it's bad as a user, try running a service that gets randomly blocked by Eero. We have paying customers who call us saying our app doesn't work, and there's no indication of why it's not working since the requests just time out. We spent two months trying to debug the issues until we finally noticed a pattern that people were reporting having an Eero. Our only recourse is to sound sketchy by telling our customers to turn off their security settings while requesting that Eero stop blocking us with no feedback or timeline for when that might be fixed. It's terrible.

Having same problem but only affecting my Fire Cube running any Amazon Apps/Services.

guest network solves issue but just can’t get primary network to work.

I’ve disabled eero secure’

I am having the same problem trying to surf the web. When I use my windows PC laptop and connect to the Eero network, websites are blocked, even on the guest network. Using a VPN seems to fix the problem and I can surf easily. I can also surf using the Eero network on my iPhone with no VPN and have no problem. The blocking happens only with the Windows laptop and no VPN. 

I was also having issues with some websites timing out. I tried changing all options within Eero and the Firewall settings on my modem. The only thing that worked for me was deactivating IPv6. I guess I'll leave this off until no one uses IPv4.

Does anyone else have issues with the eero blocking BBC iPlayer, ITV Hub etc? if I plug into the router direct, it works. If I run it through the eero they all disappear. Means I can’t run my upstairs TV properly. My internet provider are baffled. I thought it was just the new TV I got at Christmas but it’s definitely the eero blocking it. Thanks.