ShortCircuit:
You can log in anyway on your laptop, it's just the main page that glitches. Just add a reference in your website address (https://mydramalist.com/(USERNAME), it'll load just fine. I also cleared cache and logged in again, and since it landed on the main page got an error, but when I added the username to the address it let me get in anyway.
That's good its rare for mydramalist to have an error problem. i usually wait 24 hour for it to resolve so wait for that time hopefully they've noticed the problem and are working to solve it. The last problem the site had was a long time ago and it was resolved in 24 hours.