This is an exploit, not an OOM or something like that. On this day people were going around purposely crashing servers with an exploit patched in the latest version.
Hey there, if you're still having issues please create a support ticket from the email that you're trying to make a server with.
You can create a support ticket by emailing support@minehut.com or by visiting https://minehut.zendesk.com/hc/en-us/requests/new
Hello! I just wanted to let you know that Minecraft Realms is actually more expensive than the 24/7 custom plan that removes the time limit and server hibernation. $8/month for realms, or $5 for 2 months of no time limit or hibernation. You can learn more about our pricing here. The 24/7 plan is 400 credits/month.