Thank you so much! This was exactly my problem. I just restarted from scratch using fuse-primary and the Sig patches seem to be working for gamecard installer, been too busy to try goldleaf yet but I'm assuming that was the problem for that as well.
Also sorry tad unrelated, after I install with gamecard installer it tells me to update. So I booted the switch without cfw, updated, then launched games in airplane mode (in cfw). Is this right?
I can't help with you with gamecard installer as I don't use it, I install all my game via usb method with goldleaf.