Hi there. I don't want to overstep my bounds here, but I was having a discussion about this in the 'I have a Question' chat in discord.
This might be important for the server administrators.
I checked the console (F12) to see if any errors come up when trying to authenticate and it keeps saying that the email needs to be verified. What I found was that the website is getting a 403 Forbidden when trying to connect to api.eclipse-rp.net/auth/verify
Someone referenced that there was a panel issue earlier today so when the panel was probably restored, there may still be a lingering issue to the API that allows the accounts to verify.
This is just based off of what i know as an IT engineer and not a code developer - I see broke and try to narrow it down at the very least.