Discover What???

I try to access the next instalment of my chosen course and all that happens is a few pages flash past - the first being making sure I’m paying, naturally - and it takes me back to my home page every time. I have joined up with a free trial that will deduct an annual fee soon. So why can’t I watch the next video? I’m beginning to remember why I didn’t continue with this app the first time I tried it. And there is no obvious way to contact anyone connected with this app to get some help. Is anyone else having similar problems? Thanks