jueves 15 octubre 2020 :: 2148hrs (UTC +01:00)
I don’t know if this will help…
I ran some tests on this and was eventually able to open PDF files, however, an issue was as with Catalina you will need to use at least Adobe Acrobat Pro DC 19.021.20061 for macOS
Worked perfectly all the time with local installation of Nuance Power PDF for macOS
No problems with any graphic files
Of course I don’t know if you have an internet ISP issue as receiving a .BIN is only part of the attachment and often indicative of a poor internet connection and cloud link.
The whole thing is strange as I have no problems at all using Windows.
¡Saludos desde la soleada España!
Skybat