Can't access Slider Layout & Settings (User input)

Hi,
I have been having this problem since 1 day even after closing the editor and opening again, or changing browser, or clearing cookies, or in incognito mode.

Basically, I want to change the layout of the slider input element, but that tab just won’t open no matter what. For all other user input elements it works just fine.

Need a fix ASAP, is it some error on Wix servers?

Thanks,
Sameer