I like to use eTextbooks during my instruction time.  I usually have no problems opening this resource.  However, since the school closures, I click to open, and all I see is a revolving circle.  The page never appears.  Am I doing something wrong on my end or has my access been removed?  I teach several math courses (Geomety, Algebra 1, and Pre-Algebra) and have been unable to access any of them.