I can’t say why one day 6263 worked and then next it don’t. And it doesn’t look like support will say either from what you say.
I do see v7 not working, although they have yet to come out with v7 for Mac.
But upgrading OS is what they look as progress.
I just can say I was in a lucky situation where others gave me, at the time, a new Win7 laptop.
Well over time we all know Win7 died out and Win10 took its place.
With the laptop not even wanting to update to Win10, and the battery was acting up, I just had to finally trash the laptop.
I could find No browser that worked on Win 7 any longer.
And things are even worse now with Win11. So many either having to try to keep Win10 working or trashing their PC because the PC won’t install or upgrade to Win11. That’s what they call progress.
Plus, 99+% of software refuse to support Win7 since it’s so old. It’s been so long, I don’t even remember when php for windows stopped support for Win7. It was a long time ago, though,
And many at that time did not want Win10. In the end, no matter the OS, they have major updates that won’t work with some programs or some programs don’t work with the updated OS. I have seen it with Windows and Ubuntu. And if software is not maintained, then you can be stuck.
So we either choose to keep updating to newer OS or soon give up, or as one member here decided, to do a dull boot system with Win7 and Win11.