fan speeds UPDATE does not update

I got this to check my fan speeds on mac mini. Had to install the UPDATE to get the fan speed feature. PROBLEM is their own APP link goes to a bogus website. Then I find it by GOOGLE after some searching online. POOR POOR app, not complete. I pay 5 bucks to get some info, and I get NOTHING in the end. I try to download the UPDATE and it says NOT COMPATIBLE. I have done nothing wrong here, but this app says you get fan speed, but no, you don’t. You get a BROKEN APP.

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