Like so many others I purchased SignalScopeX , and expensive add-ons from this developer. I too paid well over $100 for the software. SignalScopeX no longer works. I exchanged emails with them, and they have lots of talking points to explain why your expensive software no longer works, and you should buy it all over again for even more money, with no real added features. It comes down to this, the developer wants more money. Ok, sure, why not? Except they want the money from the people who already paid for it. SignalScopeX is disabled, so you either pay them all over again, or you software is a brick that won’t even open. They want to blame Apple. Really? They want to move to a subscription model, and they are going to make you pay. If you haven’t already purchased this software, I would suggest you think whether you want to be treated the way we have been. There are alternatives available. Why suffer the pain of dealing with this developer who treats his customers so poorly? The problem isn’t the software, it’s that the developer has no regard for their customers, and, to put it simply, won’t do the right thing. BTW, just found the Spectrum app.