Downloading a form after login

I’m trying to download some immunization forms and save or send (email) them for future use. However, when I try to export the page (box with an arrow pointing up in the top right corner of the browser window), it will only export a link to the website’s login page even after opening the document in its own tab. This occurs whether I choose print, send as an email attachment (Gmail, Outlook, Yahoo), or to download as a PDF (Adobe and PDF expert). How can I get my iPad to save/send the actual PDF instead of a link to a login page?

I’ve closed and reopened the browsers, restarted my iPad, selected different export options (in Safari), switched from the mobile to desktop site, and tried downloading the page to my files first. So far, my only work around is to screenshot the pages and work with them from my photos app but I doubt that’s the best way to download these forms.

I’m on an iPad air 4 running iOS 14.8. Thank you for your help!