I haven’t used my app (8.6.3) in about a month (or two) as I have been busy with other projects. The last time I used the app it was working fine. I tried opening it today as I have a sale and it crashes. At first it was giving me the keychain login window and crashing right after I put in the password. After many tries and computer reboots it was logging me in and showing me the app window for a few seconds and then crashing.
If you turn off your internet connection your old GarageSale 8 can maybe still be started without crashing. This might be helpful if you still need to have access to this version, e.g. to export specific listings.
A major new version for usual requires a new license, yes. But it depends, you got your current GarageSale 8 for free as you probably remember
(This time you don’t qualify for the free GS9 upgrade license, sorry.)
GarageSale 9 is a major new version and requires a new license. Upgrade licenses are still available.