In-class drawing tips and guidance not working

anytime i try to do the figure study class it pops up the first photo and that's it

I need more info. Does the timer not move? Does the timer not appear at all? Are there buttons? Do the buttons work at all to advance things? Does it seem to think it's working but the image never refreshes despite the timer moving along?

Thank you for replying to answer some of the thing you brought up 
There is no timer and won’t refresh unless I click the  buttons at the bottom I can change to the next photo  same thing will  happen no timer and no refresh  . I have tips and guide turn on, they also don’t seem to work with the class's mode on