It's working for me.
This one seems to be working fine too.
You failed to pay your Morty bill so you were moved to a free hosting server. If you want a fast server you should upgrade back to Morty.
The free hosting servers are much slower than the production Morty plan. We don't recommend running Wordpress on the free hosting because it is very bloated, slow, and causes a lot of load. It's pretty common for people to get suspended for high load running 1 Wordpress site on the free hosting, and you're running 2 Wordpress sites. The 500, 502, 503, and even 504 errors are because the free hosting is very overcrowded and not intended to run such bloated software as Wordpress.
Here are some options for you to consider:
FREE: Switch to some other software other than Wordpress. Pretty much any other software will run faster with less errors.
FREE: The free hosting server you're on is scheduled to be upgraded in the next month or two anyways, because it is very old and starting to fall apart. If you want to wait for a bit it may get better.
FREE: We also have a free hosting server called Johnny that we could move you to. Since Johnny was just rebuilt a few weeks ago, and is very empty still it will be faster than the older, more crowded Tommy you're on now.
RECOMMENDED $1 per month: Upgrade back to Morty at https://heliohost.org/dashboard/move/ You've had quite a few issues since you refused to renew your Morty plan, so going back to Morty would fix all of that. This plan has variable billing if you go over 200 GB memory or 10k CPU in a day.
$4 per month: We also have VPS plans that run Wordpress well starting at $4 per month https://heliohost.org/vps/subscription/?mem=1&cpu=2&hdd=50&os=ubuntu24 The advantages of a VPS is you have the whole server to yourself so other people can't slow you down, and you have root SSH access.