Since a few weeks Firefox doesn't load/open some websites. For example, when I go to twitter.com it doesn't open, it doesn't even load. The same for Pinterest and a lot of other websites. When I open wetransfer.com for example there's no problem like you can see in the screen record. I've uploaded a screen record at WeTransfer: https://we.tl/t-uQBibmptTK Hope you guys could help me out. Thanks Luuk