It’s a strange situation. I just tried 3 different browsers on 2 different computers with different OS and all of them failed.
I took a chance on a mirror and sucessfully downloaded Parrot iso from there. The sha256 matched so I installed and am writing this on a new Parrot 5.0 system. All is working happily.
Thanks for all the work you do to create Parrot. I’m just starting with linux and this is my favorite distro by far.