I've been a fan of MacUpdate for a number of years, until this Big Sur fiasco came along. The product did not work, my subscription renewed and still no update, a three month extension and still no update.
Once upon a time I recommended this tool to everyone, sadly I can do this no more. The new operating system was released in 2020, and still this important product does not work.
I have moved to MacUpdater, and since that does what I need will not be coming back whether there is a new release or not.
This is the digital cloud-subscription world. Customer experience is everything, and a good experience drives stickiness and loyalty - but the downside is that it's also easy to lose both.
I'm afraid this is what has happened with me, and it's time to say Goodbye.