1. Just to clear it up, you said you originally had the "Http Cannot Connect" issue a few years ago and as of now you're having it again? The day in mention was the day after maintenance (for most people depending on where you're located), so that's what the Launcher's loading would have been. However, the game has come a long way since it was released, so the main fix here
is still the main fix for the issue. It only takes a few minutes to try.
2. Did you uninstall and reinstall from the same link? I would suggest trying a mirror
if you haven't to try something new.
3. Did you use the Fullcheck on the launcher? That Fullcheck is usually unreliable, as there is a better one in your C:/AeriaGames/EdenEternal folder as fullcheck.bat
that works much better.
If none of those work, the best thing you can do is work with Aeria by following up on that ticket in hopes that they can resolve the issue, as those are the main
fixes. Though if anyone knows anything else, they'll give some input.