Document never opens – XPSView for iOS : Read XPS & OXPS documents and Export to PDF Review

I can't seem to get the first document to open. This app hangs on "reading". It's a 45MB oxps file opened from OneDrive - the file was fully downloaded but Xpsview is hanging and never actually opens the file. Xpsview stays open for a few seconds and quickly vanishes into the background. Total waste of $3.99. Thanks for nothing.
Review by Joshm77 on XPSView for iOS : Read XPS & OXPS documents and Export to PDF.