Hi. I'm a relative newbie. I downloaded the 1.8.7. version and ran the installer. PixInsight stated that it was installed successfully (I didn't uninstall the old version). Then when I opened PI it asked for an online activation licence. I entered my username and 12 (not 16) character password, however a window pops up stating that Access is Denied and that they are Invalid User Credentials. I'm unsure what the old version of PI I was running as I can't open PI now! I run a 64-bit OS.
I've asked a few times and have been saddened by the lack of help...
Any ideas please?
Regards
John D, NZ