Wireless Joint

Update: New sim fixed the issue. So it looks like AT&T was blocking the connection.

Looked at their website. I would guess you are being blocked by AT&T. Incidentally I ran out of my DATA allotment this last weekend on my Cricket DATA only plan (AT&T) it presented almost identical symptoms that you are showing. Connected but nothing more. Other than the notice in SMS messaging I ...

Can't find any I3 mobile with internet search so hard to say if they have a APN they need. Interesting that you could get online in the past without a APN set unless it populated itself via your sim. If you have a data sim from someone else you could check your hardware is OK. https://www.i3mobile ...

I see that you have AT&T as the provider. Is your APN set correctly for the MVNO you are using? Also with AT&T it is entirely possible that they decided to block you. (By the way your 100% signal strength is amazing.) Over the last couple years I have used I3 Mobile and the APN has always been left ...

ping: bad address 'openwrt.org'

I have also tried to ping 8.8.8.8 through the CMD prompt with 100% loss

I've used a WE826GO-U and a 750 Spitz both with a Quectel EPO6-A and Quectel EC25-AF with the same results. The modem looks to connect and the network connects but with no internet connectivity. The original setup of the 750 and EC25-AF was working great until a couple days ago and stopped working ...