I want to report an error or a problem

hi, when I previewed my showcase, I found some problems. First, let me explain that my first and second pages are uploaded using video links, the third and fourth are both multi-page pdf uploads, and the fourth file is larger.

Question 1, when I use laptop to browse, I find that my fourth pages cannot be viewed, and the first three are all normal and can be browsed.
Question 2: When I browse on my phone, I find that my third and fourth pages are loading very slowly, and after the first page of the pdf appears, I cannot slide to view the pages below the pdf.

hoping to get your help.

l.xiao0520181@arts.ac.uk

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