Bugs in content types

Hey, we have a few Moodle courses with interactive videos. People need to complete questions in order to complete activities and move on to the next activities. 
Yesterday we received lots of complaints that they can't move on to the next activity. We could not figure out what was wrong, but I have realized that submit screen was missing submit answers button. So, I tried to reproduce the problem:

Hi, so I found some issues with HVP Mobile: 

1. Moodle is caching the WS answer with the auth token for mobile and therefore doesn't let embed the iFrame a second time due the token is just for 1 use. Here is what is happening: 

https://drive.google.com/file/d/1Xqc_Pl7orAK0TXCgFxt7sSxwK_hyR11i/view?u...

Doing a refreshing work because generate a new Auth token for embed.php, it's there any way to stop this?

Hi there,

you can check for the "error" (!?) here: https://lernenwollen.de/episode/01-der-erste-login/
The problem is that the video is embedded and it doesn't fit the window. One has to scroll up and down to see all...
This is the embedding code:

<iframe src="https://lernenwollen.de/xxxxx/admin-ajax.php?action=h5p_embed&amp;id=1" height="100%" frameborder="0"></iframe>