5g Broadband unable to connect to some sites

[Grimwald]

Since yesterday I have found that I am unable to connect to some websites and apps unless I use a VPN. I am also unable to connect to my works VPN or remote server but things like MS Teams and Outlook are fine. I have tried different things even a factory reset but still no luck. 
I notice that the firmware of the NR5103E has been updated recently to V1.00(ACBJ.0)b15  and am wondering if this has messed things up as I see others have had problems with that. Is there anyway to downgrade it?

[Grimwald]

Interesting I changed the APN to three.co.uk as Spud had mentioned and got 850Mbps. Changed it back to 3internet  and it went back down to under 150Mbps

[andyvee]

I'm seeing vastly reduced speeds as well on 3internet APN. I'll try three.co.uk to see if it improves

[Grimwald]

Since they fixed the problem I have noticed my speed has dropped significantly from around 850Mbps to less than 150Mbps. Anyone else notice this?

[Spud]

I found changing the APN from "3internet" to "three.co.uk" worked for me.

Seems to be fixed now - OK for the last few hours.

[crwban]

Resolved for me too since around 11:45 - fingers crossed that's it!

[Ancam]

11:45am, can now access the sites I was having issues with.

[Anthonative]

Having the same issue since yesterday morning, but H112-370 router with 10.0.3.1(H330SP51C21) firmware.

I'm also a 3 mobile customer so I've tried swapping my SIMs around. The issues are the same when using my phone SIM in the router, and I have no problem accessing any site on my phone with 5G using either SIM. I haven't had time to contact 3 support yet.

-edit-

The problem seems to have resolved while I was typing this😆 Hopefully it lasts!

[Grimwald]

OK not sure what's happened but everything is working again.

[Grimwald]

My Cellular WAN 1 setting is already "IPv4 IPv6 DualStack" and still no luck