Let’s clear your browser’s cache, @Salsabil. 

It's possible that piled-up cache in your regular browser caused this unusual behavior when logging in to the account. You can clear your current browser’s cache to resolve this. 

Go to your account by using a private browser or an incognito window. If it works fine, clear the cache in the one that you're currently using.

Here’s how to go incognito or use a private browser:

• For Chrome, press Ctrl+Shift+N.
• For Internet Explorer or Firefox, press Ctrl+Shift+P.
• For Safari, hold down Command+Shift+N.

Then, follow the steps in the clearing temporary internet files and cache article. 

You can also proceed by using other browsers if the steps above don’t work.

Keep in touch if you're still having an error logging in to the account. I'm always here to assist.