My forum appears blank as well

For some reason, my forum page appears blank.
I've asked someone else to see the forums, and sure enough it was blank for them as well.
It shows blank on my phone as well.

The site is: http://enderruption.forumotion.org/

Sadly, I set it so that you require another authentication to access the ACP. That authentication page shows blank as well, so I can't access the ACP to see what happened..

Any help?

Use this to connect directly to your administration panel - https://www.forumotion.com/en/utils/ .

Thankfully, I used the backup and the forum is now restored. But do you know what may have been the cause of this problem?

All I remember was editing the widgets..

Well, no matter. Problem solved.

Must've been a temporary error.