Website pages on wco.tv sometime turn out blank?

I will watch one episode of a cartoon then when I go watch the next episode, the page comes up blank

And now EVERY page for all episodes of a cartoon/anime turn out blank and it only fixes itself either randomly or the next day

Is that normal? I got ublock but it's turned off for the website

Edit: Additional Information:

I use Mozilla Firefox as my browser
I got a ethernet cable connected to my fiber internet
I live in France if that helps too?
And finaly that issue happens on any episode on any cartoon in the website, i just have to watch 1 episode of anything for it to start happening