I can't upload scores DDD:

whenever I press the "save online" button from the editor, instead of taking me to the page where I can log into my account, it just shows me a blank screen and doesn't load anything.
(I have to upload scores that way because I use soundfonts.)

is there anything I can do to fix it?

https://ibb.co/9nggpcm
https://ibb.co/x2DpTGy

also, I've tried using ms3.7 evo and all it does is display an error message that says "HTTP/1.1 498 ()"...