Can no longer access Nextcloud via great internet?

I’m looking for some help here… I have what seems to be a att connection problem but I cannot nail it down. Nextcloud works fine for a year but since last Friday we are unable to access it from the greater internet (Intranet works fine).
I’ve called ATT but they are useless… the address is

other http services on the same network are working fine… I just can’t get to nextcloud. Any network people who can help?

If I open the URL, I can see the login screen.

same here.

Looks like every thing works fine from here.

Tried classic browser temp memory & cookies flush?

Edit: lol didn’t see the tread is almost 8 month old… :slight_smile: