Course keeps showing a blue line across the project how do I stop it

I have created several hotspots with actions over images that work fine in desktop view, but drift off target when viewed in mobile. How do I keep hotspots in place? Thanks for your help.  

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Once in a project I would like to extend my Timeline, let's say to 55 seconds. It seems like the only way to do this is to drag the blue line BUT it only lets me do it in like 3 secrond increments thereby making this process long and frustrating.  Is there a better way?  

I can see the project properties panel, but there must be some secret combination conditions to get the Metadata and Update buttons to be activated - otherwise I can't save any changes to the properties or categories.   

Hi,  I accedentially set a course to status: Offline/retired.  Now when I try to find it in My creations I can't seem to see it.  Any way I can find the module?   

Good morning! I've already created an action for the player controls to have the "next" button accessible only once the page content has been viewed, but I have an additional "next" button at the bottom of my Flow page. How do I also make this only accessible once the learner has viewed all of the page content (including flip cards, tabs, etc.)? Thank you!  

I would like to change the background colour of the default header that shows when I preview the full project. How do I do that? I can see where I can create one, but I just want to change the colour.  

I have created end of module tests. When I preview the full project, they are not visible in the outline. Where are they?